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CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
CVE-2026-10667 (GCVE-0-2026-10667)
Vulnerability from cvelistv5 – Published: 2026-07-12 16:16 – Updated: 2026-07-12 16:16
VLAI
EPSS
VEX
Title
SMP use-after-free in Zephyr `CONFIG_USERSPACE` dynamic kernel-object tracking, reachable from unprivileged user threads
Summary
Zephyr's dynamic kernel-object tracking (kernel/userspace/userspace.c, formerly kernel/userspace.c) maintains a doubly-linked list (obj_list) of dynamically allocated kernel objects. Iteration over this list in k_object_wordlist_foreach() was performed under lists_lock using the SAFE iterator (which caches the next node), but list removal and freeing of nodes was performed under different, disjoint spinlocks: objfree_lock in k_object_free() and obj_lock in unref_check(). On an SMP system, while one CPU iterated obj_list under lists_lock, another CPU could unlink and k_free() the dyn_obj node that the iterator had cached as its next pointer, causing the iterator to dereference freed kernel memory (use-after-free / dangling list traversal). All of the racing operations are reachable from unprivileged user-mode threads via system calls: k_object_alloc/k_object_alloc_size and k_object_release drive removals through unref_check() (under obj_lock), while k_thread_abort and thread creation drive the iteration through k_thread_perms_all_clear()/k_thread_perms_inherit() (under lists_lock). A deprivileged user thread on a CONFIG_SMP + CONFIG_USERSPACE build can therefore corrupt the kernel's object-tracking structures across the userspace security boundary, yielding kernel memory corruption (potential privilege escalation) or a kernel crash (denial of service). The fix removes objfree_lock and serializes every obj_list modification under lists_lock, including holding it across find+remove in k_object_free() and around unref_check() in k_thread_perms_clear(). Affects CONFIG_SMP+CONFIG_USERSPACE+CONFIG_DYNAMIC_OBJECTS configurations; the defect dates to the 2019 spinlockification (commit 8a3d57b6cc6, first released in v1.14.0) and shipped through v4.4.0.
Severity
7.8 (High)
CWE
- CWE-416 - use-after-free
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject | zephyr |
Affected:
1.14.0 , < 4.5.0
(semver)
|
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CVE-2026-10703 (GCVE-0-2026-10703)
Vulnerability from cvelistv5 – Published: 2026-06-03 00:30 – Updated: 2026-06-03 12:41
VLAI
EPSS
VEX
Title
EIPStackGroup OpENer SendRRData cipmessagerouter.c CreateMessageRouterRequestStructure use after free
Summary
A security vulnerability has been detected in EIPStackGroup OpENer up to 2.3.0. Affected is the function CreateMessageRouterRequestStructure of the file cipmessagerouter.c of the component SendRRData Handler. The manipulation leads to use after free. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/368016 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/368016/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-10703 | third-party-advisory |
| https://vuldb.com/submit/830921 | third-party-advisory |
| https://github.com/EIPStackGroup/OpENer/issues/566 | issue-tracking |
| https://github.com/user-attachments/files/2710096… | exploit |
| https://github.com/EIPStackGroup/OpENer/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| EIPStackGroup | OpENer |
Affected:
2.0
Affected: 2.1 Affected: 2.2 Affected: 2.3.0 cpe:2.3:a:eipstackgroup:opener:*:*:*:*:*:*:*:* |
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CVE-2026-1144 (GCVE-0-2026-1144)
Vulnerability from cvelistv5 – Published: 2026-01-19 07:32 – Updated: 2026-02-25 16:46 X_Open Source
VLAI
EPSS
VEX
Title
quickjs-ng quickjs Atomics Ops quickjs.c use after free
Summary
A vulnerability was detected in quickjs-ng quickjs up to 0.11.0. Affected is an unknown function of the file quickjs.c of the component Atomics Ops Handler. The manipulation results in use after free. The attack can be executed remotely. The exploit is now public and may be used. The patch is identified as ea3e9d77454e8fc9cb3ef3c504e9c16af5a80141. Applying a patch is advised to resolve this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.341737 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.341737 | signaturepermissions-required |
| https://vuldb.com/?submit.735537 | third-party-advisory |
| https://vuldb.com/?submit.735538 | third-party-advisory |
| https://github.com/quickjs-ng/quickjs/issues/1301 | issue-tracking |
| https://github.com/quickjs-ng/quickjs/pull/1303 | issue-tracking |
| https://github.com/quickjs-ng/quickjs/issues/1302 | exploitissue-tracking |
| https://github.com/quickjs-ng/quickjs/commit/ea3e… | patch |
| https://github.com/quickjs-ng/quickjs/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| quickjs-ng | quickjs |
Affected:
0.1
Affected: 0.2 Affected: 0.3 Affected: 0.4 Affected: 0.5 Affected: 0.6 Affected: 0.7 Affected: 0.8 Affected: 0.9 Affected: 0.10 Affected: 0.11.0 |
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CVE-2026-11623 (GCVE-0-2026-11623)
Vulnerability from cvelistv5 – Published: 2026-06-09 03:15 – Updated: 2026-06-23 04:49 X_Open Source
VLAI
EPSS
VEX
Title
tmux image.c image_free use after free
Summary
A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the file image.c. Such manipulation leads to use after free. Local access is required to approach this attack. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue. The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be upgraded.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/369303 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/369303/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-11623 | third-party-advisory |
| https://vuldb.com/submit/835623 | third-party-advisory |
| https://gist.github.com/XlabAITeam/f0d9952595f795… | exploit |
| https://github.com/tmux/tmux/commit/fc6d94a9f8a59… | patch |
| https://github.com/tmux/tmux/releases/tag/3.7-rc | patch |
| https://github.com/tmux/tmux/ | product |
Impacted products
Credits
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CVE-2026-11791 (GCVE-0-2026-11791)
Vulnerability from cvelistv5 – Published: 2026-06-18 14:44 – Updated: 2026-06-30 10:38
VLAI
EPSS
VEX
Title
389-ds-base: 389-ds-base: use-after-free in schema reload via attr_syntax_swap_ht()
Summary
A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-11791 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2485414 | issue-trackingx_refsource_REDHAT |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Directory Server 11 |
cpe:/a:redhat:directory_server:11 |
|
| Red Hat | Red Hat Directory Server 12 |
cpe:/a:redhat:directory_server:12 |
|
| Red Hat | Red Hat Directory Server 13 |
cpe:/a:redhat:directory_server:13 |
|
| 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 |
Date Public
2026-04-16 00:00
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CVE-2026-11941 (GCVE-0-2026-11941)
Vulnerability from cvelistv5 – Published: 2026-06-19 09:55 – Updated: 2026-06-22 15:10
VLAI
EPSS
VEX
Title
Use-after-free in connection ID iterator and FFI functions
Summary
Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions.
The “quiche_connection_id_iter_next” and “quiche_conn_retired_scid_next” functions would return a pointer to a “ConnectionId” to the applications via function arguments, but the owned “ConnectionId” would be dropped at the end of those functions' scope.
Only applications using those FFI functions are affected. The FFI API is disabled by default by a build-time feature flag.
Impact
If unpatched, an application calling the affected FFI functions will dereference freed memory. The most likely outcome is undefined behavior leading to a process crash (denial of service). Depending on allocator state, the read may also return adjacent heap contents, resulting in limited information disclosure or incorrect connection identifier handling.
Mitigation
Users are requested to upgrade to quiche 0.29.2 which is the earliest version containing the fix for this issue.
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use after free
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cloudflare | Quiche |
Affected:
0.20.0 , ≤ 0.29.1
(semver)
|
Date Public
2026-06-19 09:49
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CVE-2026-12245 (GCVE-0-2026-12245)
Vulnerability from cvelistv5 – Published: 2026-06-25 05:24 – Updated: 2026-06-25 12:42
VLAI
EPSS
VEX
Title
Denial of DNS over TLS service by any DoT client
Summary
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-1… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | NSD |
Affected:
4.13.0 , < 4.14.3
(semver)
|
Date Public
2026-06-25 00:00
Credits
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CVE-2026-12706 (GCVE-0-2026-12706)
Vulnerability from cvelistv5 – Published: 2026-06-19 10:55 – Updated: 2026-06-22 19:28
VLAI
EPSS
VEX
Title
Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()
Summary
A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-12706 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2490710 | issue-trackingx_refsource_REDHAT |
| https://lists.ffmpeg.org/archives/list/ffmpeg-dev… | |
| https://patchwork.ffmpeg.org/project/ffmpeg/patch… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3 |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
Date Public
2026-05-01 00:00
Credits
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CVE-2026-12921 (GCVE-0-2026-12921)
Vulnerability from cvelistv5 – Published: 2026-06-25 17:57 – Updated: 2026-06-25 18:31
VLAI
EPSS
VEX
Title
Use after free in AzeoTech DAQFactory
Summary
In AzeoTech DAQFactory versions 21.1 and prior, a Use After Free vulnerability can be exploited by an attacker using specially crafted .ctl files which can result in code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use after free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AzeoTech | DAQFactory |
Affected:
0 , ≤ 21.1
(custom)
|
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CVE-2026-13126 (GCVE-0-2026-13126)
Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 12:13
VLAI
EPSS
VEX
Title
Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability
Summary
The embedded JavaScript in the PDF deleted the pages, making the object invalid. The application attempted to perform a write operation on the invalid pop-up annotations, resulting in the program crashing.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use after free
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Foxit Software Inc. | Foxit PDF Editor |
Affected:
Versions 2026.1.1 and earlier
Affected: Versions 14.0.4 and earlier |
|
| Foxit Software Inc. | Foxit PDF Reader |
Affected:
Versions 2026.1.1 and earlier
|
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"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use after free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-08T07:40:47.204Z",
"orgId": "14984358-7092-470d-8f34-ade47a7658a2",
"shortName": "Foxit"
},
"references": [
{
"url": "https://www.foxit.com/support/security-bulletins.html"
}
],
"title": "Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability",
"x_generator": {
"engine": "Vulnogram 1.0.2"
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}
},
"cveMetadata": {
"assignerOrgId": "14984358-7092-470d-8f34-ade47a7658a2",
"assignerShortName": "Foxit",
"cveId": "CVE-2026-13126",
"datePublished": "2026-07-08T07:36:37.927Z",
"dateReserved": "2026-06-24T03:01:45.197Z",
"dateUpdated": "2026-07-08T12:13:27.791Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Phase: Architecture and Design
Strategy: Language Selection
Description:
- Choose a language that provides automatic memory management.
Mitigation
Phase: Implementation
Strategy: Attack Surface Reduction
Description:
- When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.