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120 vulnerabilities found for BIND 9 by ISC
CVE-2026-5950 (GCVE-0-2026-5950)
Vulnerability from nvd – Published: 2026-05-20 13:10 – Updated: 2026-05-20 13:38
VLAI
Title
Unbounded resend loop in BIND 9 resolver
Summary
An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions.
This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5950 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
Impacted products
Date Public
2026-05-20 00:00
Credits
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CVE-2026-5947 (GCVE-0-2026-5947)
Vulnerability from nvd – Published: 2026-05-20 13:10 – Updated: 2026-06-30 03:18
VLAI
Title
SIG(0) validation during query flood may lead to undefined behavior
Summary
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message.
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.
BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5947 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-5947 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479772 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:7412 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.22
(custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) Unaffected: 9.18.28 , ≤ 9.18.49 (custom) Unaffected: 9.18.28-S1 , ≤ 9.18.49-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-05-20 00:00
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CVE-2026-5946 (GCVE-0-2026-5946)
Vulnerability from nvd – Published: 2026-05-20 13:10 – Updated: 2026-06-30 03:18
VLAI
Title
Invalid handling of CLASS != IN
Summary
Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5946 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-5946 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479771 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:24338 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23360 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24367 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24368 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20334 | vendor-advisoryx_refsource_REDHAT |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 8) |
cpe:/a:redhat:enterprise_linux:8::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-05-20 00:00
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CVE-2026-3593 (GCVE-0-2026-3593)
Vulnerability from nvd – Published: 2026-05-20 13:09 – Updated: 2026-06-30 03:19
VLAI
Title
Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation
Summary
A use-after-free vulnerability exists within the DNS-over-HTTPS implementation.
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.
BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3593 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-3593 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479770 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:7412 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.22
(custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) Unaffected: 9.18.0 , ≤ 9.18.48 (custom) Unaffected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-05-20 00:00
Credits
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CVE-2026-3592 (GCVE-0-2026-3592)
Vulnerability from nvd – Published: 2026-05-20 13:09 – Updated: 2026-05-20 13:42
VLAI
Title
Amplification vulnerabilities via self-pointed glue records
Summary
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-408 - Incorrect Behavior Order - Early Amplification
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3592 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) |
Date Public
2026-05-20 00:00
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CVE-2026-3039 (GCVE-0-2026-3039)
Vulnerability from nvd – Published: 2026-05-20 13:09 – Updated: 2026-06-30 03:19
VLAI
Title
BIND 9 server memory exhaustion during GSS-API TKEY negotiation
Summary
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments.
This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3039 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-3039 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479767 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:24338 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23360 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24367 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24368 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20334 | vendor-advisoryx_refsource_REDHAT |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.0.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.9.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 8) |
cpe:/a:redhat:enterprise_linux:8::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-05-20 00:00
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CVE-2026-3591 (GCVE-0-2026-3591)
Vulnerability from nvd – Published: 2026-03-25 13:34 – Updated: 2026-03-25 14:13
VLAI
Title
A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass
Summary
A use-after-return vulnerability exists in the `named` server when handling DNS queries signed with SIG(0). Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly (mis)match an IP address. In a default-allow ACL (denying only specific IP addresses), this may lead to unauthorized access. Default-deny ACLs should fail-secure.
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BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3591 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.21 | patch |
| https://downloads.isc.org/isc/bind9/9.21.20 | patch |
Impacted products
Date Public
2026-03-25 00:00
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CVE-2026-3119 (GCVE-0-2026-3119)
Vulnerability from nvd – Published: 2026-03-25 13:31 – Updated: 2026-03-25 14:13
VLAI
Title
Authenticated query containing a TKEY record may cause named to terminate unexpectedly
Summary
Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3119 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.21 | patch |
| https://downloads.isc.org/isc/bind9/9.21.20 | patch |
Impacted products
Date Public
2026-03-25 00:00
Credits
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CVE-2026-3104 (GCVE-0-2026-3104)
Vulnerability from nvd – Published: 2026-03-25 13:29 – Updated: 2026-06-30 03:19
VLAI
Title
Memory leak in code preparing DNSSEC proofs of non-existence
Summary
A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
7 references
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|---|---|
| https://kb.isc.org/docs/cve-2026-3104 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.21 | patch |
| https://downloads.isc.org/isc/bind9/9.21.20 | patch |
| https://access.redhat.com/security/cve/CVE-2026-3104 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2451310 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:6935 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.20
(custom)
Affected: 9.21.0 , ≤ 9.21.19 (custom) Affected: 9.20.9-S1 , ≤ 9.20.20-S1 (custom) Unaffected: 9.18.0 , ≤ 9.18.46 (custom) Unaffected: 9.18.11-S1 , ≤ 9.18.46-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-03-25 00:00
Credits
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CVE-2026-1519 (GCVE-0-2026-1519)
Vulnerability from nvd – Published: 2026-03-25 13:25 – Updated: 2026-06-30 03:20
VLAI
Title
Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Summary
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
26 references
Impacted products
36 products
Date Public
2026-03-25 00:00
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CVE-2025-13878 (GCVE-0-2025-13878)
Vulnerability from nvd – Published: 2026-01-21 14:43 – Updated: 2026-06-30 03:21
VLAI
Title
Malformed BRID/HHIT records can cause named to terminate unexpectedly
Summary
Malformed BRID/HHIT records can cause `named` to terminate unexpectedly.
This issue affects BIND 9 versions 9.18.40 through 9.18.43, 9.20.13 through 9.20.17, 9.21.12 through 9.21.16, 9.18.40-S1 through 9.18.43-S1, and 9.20.13-S1 through 9.20.17-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-13878 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.44 | patch |
| https://downloads.isc.org/isc/bind9/9.20.18 | patch |
| https://downloads.isc.org/isc/bind9/9.21.17 | patch |
| http://www.openwall.com/lists/oss-security/2026/01/21/3 | |
| https://access.redhat.com/security/cve/CVE-2025-13878 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2431600 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:6935 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.40 , ≤ 9.18.43
(custom)
Affected: 9.20.13 , ≤ 9.20.17 (custom) Affected: 9.21.12 , ≤ 9.21.16 (custom) Affected: 9.18.40-S1 , ≤ 9.18.43-S1 (custom) Affected: 9.20.13-S1 , ≤ 9.20.17-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-01-21 00:00
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CVE-2025-8677 (GCVE-0-2025-8677)
Vulnerability from nvd – Published: 2025-10-22 15:43 – Updated: 2025-11-04 21:15
VLAI
Title
Resource exhaustion via malformed DNSKEY handling
Summary
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.
This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-8677 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/10/22/1 |
Impacted products
Date Public
2025-10-22 00:00
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CVE-2025-40780 (GCVE-0-2025-40780)
Vulnerability from nvd – Published: 2025-10-22 15:48 – Updated: 2025-11-04 21:10
VLAI
Title
Cache poisoning due to weak PRNG
Summary
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use.
This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-40780 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/10/22/1 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.16.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.39 (custom) Affected: 9.20.0 , ≤ 9.20.13 (custom) Affected: 9.21.0 , ≤ 9.21.12 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.39-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.13-S1 (custom) |
Date Public
2025-10-22 00:00
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CVE-2025-40778 (GCVE-0-2025-40778)
Vulnerability from nvd – Published: 2025-10-22 15:47 – Updated: 2026-02-26 16:57
VLAI
Title
Cache poisoning attacks with unsolicited RRs
Summary
Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
8.6 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.39 (custom) Affected: 9.20.0 , ≤ 9.20.13 (custom) Affected: 9.21.0 , ≤ 9.21.12 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.39-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.13-S1 (custom) |
Date Public
2025-10-22 00:00
Credits
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CVE-2025-40777 (GCVE-0-2025-40777)
Vulnerability from nvd – Published: 2025-07-16 17:38 – Updated: 2025-11-04 21:10
VLAI
Title
A possible assertion failure when 'stale-answer-client-timeout' is set to '0'
Summary
If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure.
This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-40777 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/07/16/6 |
Impacted products
Date Public
2025-07-16 00:00
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CVE-2026-5950 (GCVE-0-2026-5950)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-05-20 13:38
VLAI
Title
Unbounded resend loop in BIND 9 resolver
Summary
An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions.
This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5950 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
Impacted products
Date Public
2026-05-20 00:00
Credits
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CVE-2026-5947 (GCVE-0-2026-5947)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-06-30 03:18
VLAI
Title
SIG(0) validation during query flood may lead to undefined behavior
Summary
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message.
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.
BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5947 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-5947 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479772 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:7412 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.22
(custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) Unaffected: 9.18.28 , ≤ 9.18.49 (custom) Unaffected: 9.18.28-S1 , ≤ 9.18.49-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-05-20 00:00
Credits
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CVE-2026-5946 (GCVE-0-2026-5946)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-06-30 03:18
VLAI
Title
Invalid handling of CLASS != IN
Summary
Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-5946 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-5946 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479771 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:24338 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23360 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24367 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24368 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20334 | vendor-advisoryx_refsource_REDHAT |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 8) |
cpe:/a:redhat:enterprise_linux:8::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
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cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-05-20 00:00
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CVE-2026-3593 (GCVE-0-2026-3593)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:09 – Updated: 2026-06-30 03:19
VLAI
Title
Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation
Summary
A use-after-free vulnerability exists within the DNS-over-HTTPS implementation.
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.
BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3593 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-3593 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479770 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:7412 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.22
(custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) Unaffected: 9.18.0 , ≤ 9.18.48 (custom) Unaffected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-05-20 00:00
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CVE-2026-3592 (GCVE-0-2026-3592)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:09 – Updated: 2026-05-20 13:42
VLAI
Title
Amplification vulnerabilities via self-pointed glue records
Summary
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-408 - Incorrect Behavior Order - Early Amplification
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3592 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) |
Date Public
2026-05-20 00:00
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CVE-2026-3039 (GCVE-0-2026-3039)
Vulnerability from cvelistv5 – Published: 2026-05-20 13:09 – Updated: 2026-06-30 03:19
VLAI
Title
BIND 9 server memory exhaustion during GSS-API TKEY negotiation
Summary
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments.
This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3039 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.49 | patch |
| https://downloads.isc.org/isc/bind9/9.20.23 | patch |
| https://downloads.isc.org/isc/bind9/9.21.22 | patch |
| https://access.redhat.com/security/cve/CVE-2026-3039 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479767 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:24338 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23360 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24367 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24368 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20334 | vendor-advisoryx_refsource_REDHAT |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.0.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom) Affected: 9.20.0 , ≤ 9.20.22 (custom) Affected: 9.21.0 , ≤ 9.21.21 (custom) Affected: 9.9.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom) |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 8) |
cpe:/a:redhat:enterprise_linux:8::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-05-20 00:00
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CVE-2026-3591 (GCVE-0-2026-3591)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:34 – Updated: 2026-03-25 14:13
VLAI
Title
A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass
Summary
A use-after-return vulnerability exists in the `named` server when handling DNS queries signed with SIG(0). Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly (mis)match an IP address. In a default-allow ACL (denying only specific IP addresses), this may lead to unauthorized access. Default-deny ACLs should fail-secure.
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BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
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| https://downloads.isc.org/isc/bind9/9.20.21 | patch |
| https://downloads.isc.org/isc/bind9/9.21.20 | patch |
Impacted products
Date Public
2026-03-25 00:00
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CVE-2026-3119 (GCVE-0-2026-3119)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:31 – Updated: 2026-03-25 14:13
VLAI
Title
Authenticated query containing a TKEY record may cause named to terminate unexpectedly
Summary
Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration.
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BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3119 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.21 | patch |
| https://downloads.isc.org/isc/bind9/9.21.20 | patch |
Impacted products
Date Public
2026-03-25 00:00
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CVE-2026-3104 (GCVE-0-2026-3104)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:29 – Updated: 2026-06-30 03:19
VLAI
Title
Memory leak in code preparing DNSSEC proofs of non-existence
Summary
A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.
This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.
BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-3104 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.21 | patch |
| https://downloads.isc.org/isc/bind9/9.21.20 | patch |
| https://access.redhat.com/security/cve/CVE-2026-3104 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2451310 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:6935 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.20.0 , ≤ 9.20.20
(custom)
Affected: 9.21.0 , ≤ 9.21.19 (custom) Affected: 9.20.9-S1 , ≤ 9.20.20-S1 (custom) Unaffected: 9.18.0 , ≤ 9.18.46 (custom) Unaffected: 9.18.11-S1 , ≤ 9.18.46-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-03-25 00:00
Credits
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CVE-2026-1519 (GCVE-0-2026-1519)
Vulnerability from cvelistv5 – Published: 2026-03-25 13:25 – Updated: 2026-06-30 03:20
VLAI
Title
Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Summary
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
26 references
Impacted products
36 products
Date Public
2026-03-25 00:00
Credits
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CVE-2025-13878 (GCVE-0-2025-13878)
Vulnerability from cvelistv5 – Published: 2026-01-21 14:43 – Updated: 2026-06-30 03:21
VLAI
Title
Malformed BRID/HHIT records can cause named to terminate unexpectedly
Summary
Malformed BRID/HHIT records can cause `named` to terminate unexpectedly.
This issue affects BIND 9 versions 9.18.40 through 9.18.43, 9.20.13 through 9.20.17, 9.21.12 through 9.21.16, 9.18.40-S1 through 9.18.43-S1, and 9.20.13-S1 through 9.20.17-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-13878 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.18.44 | patch |
| https://downloads.isc.org/isc/bind9/9.20.18 | patch |
| https://downloads.isc.org/isc/bind9/9.21.17 | patch |
| http://www.openwall.com/lists/oss-security/2026/01/21/3 | |
| https://access.redhat.com/security/cve/CVE-2025-13878 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2431600 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:6935 | vendor-advisoryx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.40 , ≤ 9.18.43
(custom)
Affected: 9.20.13 , ≤ 9.20.17 (custom) Affected: 9.21.12 , ≤ 9.21.16 (custom) Affected: 9.18.40-S1 , ≤ 9.18.43-S1 (custom) Affected: 9.20.13-S1 , ≤ 9.20.17-S1 (custom) |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public
2026-01-21 00:00
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CVE-2025-40780 (GCVE-0-2025-40780)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:48 – Updated: 2025-11-04 21:10
VLAI
Title
Cache poisoning due to weak PRNG
Summary
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use.
This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-40780 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/10/22/1 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.16.0 , ≤ 9.16.50
(custom)
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Date Public
2025-10-22 00:00
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CVE-2025-40778 (GCVE-0-2025-40778)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:47 – Updated: 2026-02-26 16:57
VLAI
Title
Cache poisoning attacks with unsolicited RRs
Summary
Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
8.6 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.39 (custom) Affected: 9.20.0 , ≤ 9.20.13 (custom) Affected: 9.21.0 , ≤ 9.21.12 (custom) Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.39-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.13-S1 (custom) |
Date Public
2025-10-22 00:00
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CVE-2025-8677 (GCVE-0-2025-8677)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:43 – Updated: 2025-11-04 21:15
VLAI
Title
Resource exhaustion via malformed DNSKEY handling
Summary
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.
This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-8677 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/10/22/1 |
Impacted products
Date Public
2025-10-22 00:00
Credits
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CVE-2025-40777 (GCVE-0-2025-40777)
Vulnerability from cvelistv5 – Published: 2025-07-16 17:38 – Updated: 2025-11-04 21:10
VLAI
Title
A possible assertion failure when 'stale-answer-client-timeout' is set to '0'
Summary
If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure.
This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-40777 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/07/16/6 |
Impacted products
Date Public
2025-07-16 00:00
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