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().
4575 vulnerabilities reference this CWE, most recent first.
CVE-2026-75538 (GCVE-0-2026-75538)
Vulnerability from cvelistv5 – Published: 2026-09-01 14:48 – Updated: 2026-09-01 15:58
VLAI
EPSS
VEX
Title
A Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated Peer
Summary
An attacker that connects to an open Erlang TCP port that uses the inet driver with {packet,4} mode can use a signed overflow in an incorrect packet length calculation to overflow the receive buffer into the VM allocator area and beyond up to about 2 GB.
This would easily trash the allocated block's allocator metadata footer, and the next block, if any, and most likely cause the BEAM VM to crash. Utilizing this with precision enough to achieve Remote Code Execution would be extremely unfeasible.
This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to erts from 6.0 before 15.2.7.13, from 16.0 before 16.4.0.6, and from 17.0 before 17.0.6. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:58 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisory |
| https://cna.erlef.org/cves/CVE-2026-75538.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-75538 | related |
| https://github.com/erlang/otp/commit/08e8efdba850… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Erlang | OTP |
Unknown:
0 , < 17.0
(otp)
Affected: 17.0 , < 27.3.4.17 (otp) Affected: 28.0 , < 28.5.0.6 (otp) Affected: 29.0 , < 29.0.6 (otp) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| Erlang | OTP |
Unknown:
0 , < 6.0
(otp)
Affected: 6.0 , < 15.2.7.13 (otp) Affected: 16.0 , < 16.4.0.6 (otp) Affected: 17.0 , < 17.0.6 (otp) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| Erlang | OTP |
Affected:
84adefa331c4159d432d22840663c38f155cd4c1 , < 08e8efdba8500d2d6f54c6b1de1492b228017c9b
(git)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
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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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CVE-2026-75143 (GCVE-0-2026-75143)
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 via RIST Protocol Reader
Summary
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
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/24089 | issue-tracking |
| https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1c10… | patch |
| https://www.vulncheck.com/advisories/ffmpeg-heap-… | third-party-advisory |
Impacted products
Date Public
2026-08-04 00:00
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CVE-2026-75141 (GCVE-0-2026-75141)
Vulnerability from cvelistv5 – Published: 2026-08-19 16:24 – Updated: 2026-08-21 03:55 X_Open Source
VLAI
EPSS
VEX
Title
FFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC Muxing
Summary
FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers the overflow during muxing.
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/24088 | issue-tracking |
| https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/acf5… | patch |
| https://www.vulncheck.com/advisories/ffmpeg-heap-… | third-party-advisory |
Impacted products
Date Public
2026-08-04 00:00
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CVE-2026-73242 (GCVE-0-2026-73242)
Vulnerability from cvelistv5 – Published: 2026-08-11 19:49 – Updated: 2026-08-12 12:57
VLAI
EPSS
VEX
Title
FreeRDP: Kerberos GSS Wrap-token `EC` field is unbounded, causing an out-of-bounds decrypt in `kerberos_DecryptMessage`
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP's winpr/libwinpr/sspi/Kerberos/kerberos.c kerberos_DecryptMessage function fails to bound the peer-controlled GSS Wrap-token EC field before using it with RRC in IOV pointer offsets, allowing a malicious RDP peer to trigger out-of-bounds reads and in-place writes during CredSSP/NLA Kerberos decryption. This issue is fixed in version 3.30.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 12:56 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | x_refsource_CONFIRM |
| https://github.com/FreeRDP/FreeRDP/pull/13065 | x_refsource_MISC |
| https://github.com/FreeRDP/FreeRDP/commit/0adf5e3… | x_refsource_MISC |
| https://github.com/FreeRDP/FreeRDP/releases/tag/3.30.0 | x_refsource_MISC |
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CVE-2026-73072 (GCVE-0-2026-73072)
Vulnerability from cvelistv5 – Published: 2026-08-11 15:31 – Updated: 2026-08-13 15:17
VLAI
EPSS
VEX
Title
Vim: Heap Buffer Overflow when Loading a Spell File
Summary
Vim is an open source, command line text editor. Prior to 9.2.0846, set_sofo() in src/spellfile.c reuses sl_sal_first[] without resetting values left by set_sal_first(), so a crafted spell file containing an SN_SAL section before an SN_SOFO section causes under-counted mapping lists and attacker-influenced writes beyond a heap allocation. This issue is fixed in version 9.2.0846.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:17 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/vim/vim/security/advisories/GH… | x_refsource_CONFIRM |
| https://github.com/vim/vim/commit/05c41c922309c7a… | x_refsource_MISC |
| https://github.com/vim/vim/releases/tag/v9.2.0846 | x_refsource_MISC |
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CVE-2026-72970 (GCVE-0-2026-72970)
Vulnerability from cvelistv5 – Published: 2026-08-14 18:06 – Updated: 2026-08-31 20:04
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Summary
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.86
(custom)
cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* |
Date Public
2026-08-14 14:00
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CVE-2026-72745 (GCVE-0-2026-72745)
Vulnerability from cvelistv5 – Published: 2026-08-11 12:16 – Updated: 2026-08-12 16:57
VLAI
EPSS
VEX
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CVE-2026-71331 (GCVE-0-2026-71331)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-08-31 20:08
VLAI
EPSS
VEX
Title
Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability
Summary
Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 00:00 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9121
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5499
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33296
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33296
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-70654 (GCVE-0-2026-70654)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:07 – Updated: 2026-08-21 11:35
VLAI
EPSS
VEX
Title
libvips: A well-crafted PPM image processed via a custom source could lead to possible heap buffer write overflow
Summary
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, applications that define unusual custom libvips sources and use them to process untrusted uncompressed PPM images can trigger a max/min error in vips_source_read_to_memory in libvips/iofuncs/source.c. The function uses VIPS_MAX instead of VIPS_MIN when selecting the remaining read size, allowing up to 4032 bytes to be written beyond the allocated heap buffer and causing memory corruption or a process crash. This issue is fixed in version 8.18.3.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 11:32 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libvips/libvips/security/advis… | x_refsource_CONFIRM |
| https://github.com/libvips/libvips/pull/5038 | x_refsource_MISC |
| https://github.com/libvips/libvips/commit/80e021c… | x_refsource_MISC |
| https://github.com/libvips/libvips/releases/tag/v8.18.3 | x_refsource_MISC |
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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.