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().
4516 vulnerabilities reference this CWE, most recent first.
CVE-2026-78156 (GCVE-0-2026-78156)
Vulnerability from cvelistv5 – Published: 2026-08-23 23:45 – Updated: 2026-08-23 23:45 X_Open Source
VLAI
EPSS
VEX
Title
Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow
Summary
A security vulnerability has been detected in Open5GS 2.8.0. Affected by this issue is the function hss_ogs_diam_s6a_air_cb of the file src/hss/hss-s6a-path.c of the component S6a Authentication-Information-Request Handler. Such manipulation of the argument Visited-PLMN-Id leads to heap-based buffer overflow. The attack may be performed from remote. The name of the patch is a9c82ee0b590d76a581b0580cb46b598984e2392. A patch should be applied to remediate this issue.
Severity
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394539 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394539/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78156 | third-party-advisory |
| https://vuldb.com/submit/882951 | third-party-advisory |
| https://github.com/open5gs/open5gs/issues/4661 | issue-tracking |
| https://github.com/open5gs/open5gs/commit/a9c82ee… | patch |
| https://github.com/open5gs/open5gs/ | product |
Impacted products
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CVE-2026-76918 (GCVE-0-2026-76918)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:45 – Updated: 2026-08-20 15:26
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:08 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)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76917 (GCVE-0-2026-76917)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:44 – Updated: 2026-08-20 15:26
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
Bluetooth AVRCP Profile protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:08 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)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76889 (GCVE-0-2026-76889)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-08-20 15:26
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
UMTS FP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:08 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)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76888 (GCVE-0-2026-76888)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-08-20 15:09
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:05 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)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76887 (GCVE-0-2026-76887)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-08-20 15:04
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:02 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)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76886 (GCVE-0-2026-76886)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-08-20 15:01
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:01 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)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76883 (GCVE-0-2026-76883)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-08-20 14:25
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
Catapult DCT2000 file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 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 2026-08-20 14:15 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-2026-75619 (GCVE-0-2026-75619)
Vulnerability from cvelistv5 – Published: 2026-08-19 18:30 – Updated: 2026-08-19 19:31
VLAI
EPSS
VEX
Title
RTSP Heap Buffer Overflow Denial-of-Service Vulnerability on TP-Link Tapo C100 and C101
Summary
Tapo
C100/C101 V5 contains a heap-based buffer overflow vulnerability in the RTSP
service. An authenticated attacker on the local network can send specially
crafted RTSP frame data containing oversized length values, resulting in
out-of-bounds heap writes.
Successful
exploitation can crash the RTSP service and trigger a device reboot, resulting
in a temporary denial-of-service condition.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 19:31 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
4 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | Tapo C100 v5 |
Affected:
0 , < 1.5.4 Build 260528 Rel.11462n
(custom)
|
|
| TP-Link Systems Inc. | Tapo C101 v5 |
Affected:
0 , < 1.5.4 Build 260528 Rel.11462n
(custom)
|
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CVE-2026-75144 (GCVE-0-2026-75144)
Vulnerability from cvelistv5 – Published: 2026-08-19 16:26 – Updated: 2026-08-21 03:55 X_Open Source
VLAI
EPSS
VEX
Title
FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer
Summary
FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24091 | issue-tracking |
| https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1cde… | patch |
| https://www.vulncheck.com/advisories/ffmpeg-heap-… | third-party-advisory |
Impacted products
Date Public
2026-08-04 00:00
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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.