Common Weakness Enumeration
CWE-122
AllowedHeap-based Buffer Overflow
Abstraction: Variant · Status: Draft
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
5429 vulnerabilities reference this CWE, most recent first.
CVE-2026-19694 (GCVE-0-2026-19694)
Vulnerability from cvelistv5 – Published: 2026-08-13 08:04 – Updated: 2026-08-13 14:20
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service
Severity
4.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:19 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.8
(semver)
|
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CVE-2026-19499 (GCVE-0-2026-19499)
Vulnerability from cvelistv5 – Published: 2026-09-14 17:11 – Updated: 2026-09-14 19:40
VLAI
EPSS
VEX
Title
Buffer overflow in strfmon and strfmon_l right-justification padding
Summary
Calling strfmon and strfmon_l in the GNU C Library version 2.38 to 2.44 can write past the end of the caller-supplied output buffer when a conversion uses right-justified width padding.
Exploitation requires an application code path that calls strfmon or strfmon_l with right-justified width padding into a destination buffer that is large enough for the padding to succeed but too small for the internal memmove call. The field width or format may be attacker-influenced or a fixed susceptible pattern in the caller.
At the time of publication, no network-facing application impact is known.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:40 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://sourceware.org/bugzilla/show_bug.cgi?id=34510 | issue-tracking |
| https://sourceware.org/git/?p=glibc.git;a=blob_pl… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The GNU C Library | glibc |
Affected:
2.38 , ≤ 2.44
(custom)
|
Date Public
2026-08-11 04:00
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CVE-2026-19385 (GCVE-0-2026-19385)
Vulnerability from cvelistv5 – Published: 2026-08-13 13:00 – Updated: 2026-08-29 23:07
VLAI
EPSS
VEX
Title
PostgreSQL pg_dump heap buffer overflow executes arbitrary code
Summary
Heap buffer overflow in PostgreSQL pg_dump of long function transform lists allows an object creator to execute arbitrary code as the operating system user running pg_dump, via a crafted transform list. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | PostgreSQL |
Affected:
18 , < 18.6
(rpm)
Affected: 17 , < 17.11 (rpm) Affected: 16 , < 16.15 (rpm) Affected: 15 , < 15.19 (rpm) Affected: 0 , < 14.24 (rpm) |
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CVE-2026-19313 (GCVE-0-2026-19313)
Vulnerability from cvelistv5 – Published: 2026-08-27 23:24 – Updated: 2026-09-11 21:34
VLAI
EPSS
VEX
Title
Fireware OS Pre-Authentication Heap Buffer Overflow in iked Allows Remote Code Execution
Summary
An heap overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 00:00 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-19313 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.0 , < 2026.2.2
(custom)
Affected: 12.0 , < 12.12.2 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.20
(custom)
Affected: 2026.3 , < 2026.3.1 (custom) |
Date Public
2026-08-27 23:24
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CVE-2026-19259 (GCVE-0-2026-19259)
Vulnerability from cvelistv5 – Published: 2026-08-08 06:00 – Updated: 2026-08-10 14:37
VLAI
EPSS
VEX
Title
MZ Automation libiec61850 MMS Protocol Workflow iec61850_common.c MmsMapping_varAccessSpecToObjectReference heap-based overflow
Summary
A vulnerability has been found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function MmsMapping_varAccessSpecToObjectReference of the file src/iec61850/common/iec61850_common.c of the component MMS Protocol Workflow. Such manipulation of the argument GetNamedVariableListAttributesResponse.itemId leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public 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 · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 14:29 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/387009 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/387009/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-19259 | third-party-advisory |
| https://vuldb.com/submit/865176 | third-party-advisory |
| https://github.com/mz-automation/libiec61850/issues/599 | issue-tracking |
| https://github.com/user-attachments/files/2919042… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MZ Automation | libiec61850 |
Affected:
1.6.0
Affected: 1.6.1 cpe:2.3:a:mz_automation:libiec61850:*:*:*:*:*:*:*:* |
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CVE-2026-19206 (GCVE-0-2026-19206)
Vulnerability from cvelistv5 – Published: 2026-08-07 13:45 – Updated: 2026-08-07 14:24 X_Open Source
VLAI
EPSS
VEX
Title
MZ Automation libiec61850 ASDU Element sv_subscriber.c SVReceiver_stopThreadless heap-based overflow
Summary
A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 14:21 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/386950 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/386950/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-19206 | third-party-advisory |
| https://vuldb.com/submit/864840 | third-party-advisory |
| https://github.com/mz-automation/libiec61850/issues/598 | exploitissue-tracking |
| https://github.com/mz-automation/libiec61850/issu… | issue-tracking |
| https://github.com/mz-automation/libiec61850/comm… | patch |
| https://github.com/mz-automation/libiec61850/rele… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MZ Automation | libiec61850 |
Affected:
1.6.0
Affected: 1.6.1 Unaffected: 1.6.2 cpe:2.3:a:mz_automation:libiec61850:*:*:*:*:*:*:*:* |
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CVE-2026-19004 (GCVE-0-2026-19004)
Vulnerability from cvelistv5 – Published: 2026-08-12 20:33 – Updated: 2026-08-13 14:09
VLAI
EPSS
VEX
Title
MongoDB BI Connector ODBC Driver Memory-Safety Issue When Handling Stored Procedure Output Parameters
Summary
An application using the MongoDB BI Connector ODBC Driver may experience a memory-safety issue when processing output parameters from a stored procedure. Triggering this issue requires connecting to an untrusted or impersonated database server that returns crafted metadata. This may result in process termination, disclosure of process memory, or, under certain conditions, arbitrary code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:09 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | BI Connector ODBC Driver |
Affected:
1.0.0 , < 1.4.9
(semver)
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CVE-2026-18938 (GCVE-0-2026-18938)
Vulnerability from cvelistv5 – Published: 2026-08-07 08:19 – Updated: 2026-08-07 15:14
VLAI
EPSS
VEX
Title
P11-kit: integer overflow in rpc attribute-array length calculation can under-allocate nested attribute storage on 32 bit systems
Summary
A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 15:14 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-18938 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2478995 | issue-trackingx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| 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 Hardened Images |
cpe:/a:redhat:hummingbird:1
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-08-07 08:13
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CVE-2026-18784 (GCVE-0-2026-18784)
Vulnerability from cvelistv5 – Published: 2026-08-04 16:30 – Updated: 2026-08-05 14:55
VLAI
EPSS
VEX
Title
o6 open62541 ua_client_highlevel.c UA_Client_readNodeClassAttribute heap-based overflow
Summary
A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UA_Client_readNodeClassAttribute of the file src/client/ua_client_highlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:55 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/385786 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/385786/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-18784 | third-party-advisory |
| https://vuldb.com/submit/857012 | third-party-advisory |
| https://github.com/open62541/open62541/issues/8139 | issue-tracking |
| https://github.com/gff-cw/information/issues/11 | exploitissue-tracking |
Impacted products
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CVE-2026-18585 (GCVE-0-2026-18585)
Vulnerability from cvelistv5 – Published: 2026-08-03 05:15 – Updated: 2026-08-03 13:21
VLAI
EPSS
VEX
Title
GL.iNet MT2500 APPS-NAS nas-web.get_file_list heap-based overflow
Summary
A vulnerability was detected in GL.iNet MT3000, MT6000, BE9300, BE3600, MT3600BE, E5800, BE6500, MT5000, X3000, XE3000 and MT2500 up to 20260707. The affected element is the function nas-web.get_file_list of the component APPS-NAS Module. Performing a manipulation results in heap-based buffer overflow. The attack may be initiated remotely. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 13:20 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/385414 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/385414/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-18585 | third-party-advisory |
| https://vuldb.com/submit/849290 | third-party-advisory |
| https://github.com/gl-inet/CVE-issues/blob/main/4… | related |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| GL.iNet | MT3000 |
Affected:
20260707
cpe:2.3:a:gl.inet:mt3000:*:*:*:*:*:*:*:* |
|
| GL.iNet | MT6000 |
Affected:
20260707
cpe:2.3:a:gl.inet:mt6000:*:*:*:*:*:*:*:* |
|
| GL.iNet | BE9300 |
Affected:
20260707
cpe:2.3:a:gl.inet:be9300:*:*:*:*:*:*:*:* |
|
| GL.iNet | BE3600 |
Affected:
20260707
cpe:2.3:a:gl.inet:be3600:*:*:*:*:*:*:*:* |
|
| GL.iNet | MT3600BE |
Affected:
20260707
cpe:2.3:a:gl.inet:mt3600be:*:*:*:*:*:*:*:* |
|
| GL.iNet | E5800 |
Affected:
20260707
cpe:2.3:a:gl.inet:e5800:*:*:*:*:*:*:*:* |
|
| GL.iNet | BE6500 |
Affected:
20260707
cpe:2.3:a:gl.inet:be6500:*:*:*:*:*:*:*:* |
|
| GL.iNet | MT5000 |
Affected:
20260707
cpe:2.3:a:gl.inet:mt5000:*:*:*:*:*:*:*:* |
|
| GL.iNet | X3000 |
Affected:
20260707
cpe:2.3:a:gl.inet:x3000:*:*:*:*:*:*:*:* |
|
| GL.iNet | XE3000 |
Affected:
20260707
cpe:2.3:a:gl.inet:xe3000:*:*:*:*:*:*:*:* |
|
| GL.iNet | MT2500 |
Affected:
20260707
cpe:2.3:a:gl.inet:mt2500:*:*:*:*:*:*:*:* |
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"vendor": "GL.iNet",
"versions": [
{
"status": "affected",
"version": "20260707"
}
]
}
],
"credits": [
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"type": "coordinator",
"value": "VulDB CNA Team"
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"value": "A vulnerability was detected in GL.iNet MT3000, MT6000, BE9300, BE3600, MT3600BE, E5800, BE6500, MT5000, X3000, XE3000 and MT2500 up to 20260707. The affected element is the function nas-web.get_file_list of the component APPS-NAS Module. Performing a manipulation results in heap-based buffer overflow. The attack may be initiated remotely. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability."
}
],
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"name": "VDB-385414 | GL.iNet MT2500 APPS-NAS nas-web.get_file_list heap-based overflow",
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{
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{
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"url": "https://vuldb.com/cve/CVE-2026-18585"
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{
"name": "Submit #849290 | GL.iNet Router 4.8.x Cache overflow",
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"url": "https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/Heap%20buffer%20overflow%20in%20nas-web.get_file_list%20leading%20to%20authenticated%20denial%20of%20service.md"
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"time": "2026-08-02T00:00:00.000Z",
"value": "Advisory disclosed"
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"time": "2026-08-02T02:00:00.000Z",
"value": "VulDB entry created"
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{
"lang": "en",
"time": "2026-08-02T21:29:12.000Z",
"value": "VulDB entry last update"
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"title": "GL.iNet MT2500 APPS-NAS nas-web.get_file_list heap-based overflow",
"x_generator": [
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"cveMetadata": {
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"dateUpdated": "2026-08-03T13:21:10.843Z",
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Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.