Common Weakness Enumeration
CWE-680
DiscouragedInteger Overflow to Buffer Overflow
Abstraction: Compound · Status: Draft
The product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.
158 vulnerabilities reference this CWE, most recent first.
CVE-2026-95107 (GCVE-0-2026-95107)
Vulnerability from cvelistv5 – Published: 2026-10-20 15:20 – Updated: 2026-10-20 17:05
VLAI
EPSS
VEX
Title
Module object allocation size overflow corrupts the manager object pool
Summary
A ThreadX module chooses `object_size` when it calls `txm_module_object_allocate`. The Module Manager adds its own 16-byte private header to that size and asked the object pool for the result **without checking the addition**. A size near the top of a `ULONG` wrapped, the pool served a block far smaller than the header, and the manager then wrote the header past the end of it and into the neighbouring byte-pool block.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 17:05 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX |
Affected:
6.0.1 , ≤ 6.5.1.202602a
(semver)
Unaffected: 6.5.2.202603 |
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CVE-2026-91189 (GCVE-0-2026-91189)
Vulnerability from cvelistv5 – Published: 2026-10-20 14:53 – Updated: 2026-10-20 15:25
VLAI
EPSS
VEX
Title
GUIX binary resource loader: unvalidated glyph range causes an integer underflow and a heap out-of-bounds write when loading an untrusted font or theme
Summary
The GUIX binary resource loader never checks that a font page's glyph range is well formed. `gx_page_header_first_glyph` and `gx_page_header_last_glyph` are read verbatim from the file and only the upper bound of `last_glyph` is validated, so a page declaring `first_glyph > last_glyph` makes `last - first + 1` underflow to a very large unsigned count.
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 15:24 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX - GUIX |
Affected:
0 , ≤ 6.5.1.202602a
(semver)
Unaffected: 6.5.2.202603 |
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CVE-2026-90783 (GCVE-0-2026-90783)
Vulnerability from cvelistv5 – Published: 2026-09-13 12:22 – Updated: 2026-09-30 19:07
VLAI
EPSS
VEX
Title
MKVToolNix through 101.0 Heap Buffer Overflow via avilib ODML Superindex Integer Wraparound
Summary
MKVToolNix through 101.0 contains a heap buffer overflow in the bundled avilib library's ODML superindex parser due to integer wraparound in 32-bit arithmetic. Attackers can craft a malicious AVI file with oversized entry counts that cause an undersized heap allocation, allowing a heap buffer overflow when the file is parsed with mkvmerge.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 17:32 UTC
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://codeberg.org/mbunkus/mkvtoolnix/commit/14… | patch |
| https://codeberg.org/mbunkus/mkvtoolnix/src/tag/r… | technical-description |
| https://codeberg.org/mbunkus/mkvtoolnix | product |
| https://www.vulncheck.com/advisories/mkvtoolnix-t… | third-party-advisory |
| https://lists.debian.org/debian-lts-announce/2026… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Moritz Bunkus | MKVToolNix |
Affected:
0 , ≤ 101.0
(custom)
Unaffected: 1495126138e086080f0163bee27fafbdf956a1d0 (git) |
Date Public
2026-08-25 00:00
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CVE-2026-81647 (GCVE-0-2026-81647)
Vulnerability from cvelistv5 – Published: 2026-09-09 03:44 – Updated: 2026-09-09 20:51
VLAI
EPSS
VEX
Summary
Out-of-bounds read vulnerability in the graphics module.
Impact: Successful exploitation of this vulnerability may affect availability.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 15:55 UTC
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
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CVE-2026-76825 (GCVE-0-2026-76825)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:09 – Updated: 2026-09-16 18:35
VLAI
EPSS
VEX
Title
RestrictedPython: Sandbox escape via string.Formatter field resolution
Summary
RestrictedPython is a tool that helps define a subset of the Python language for accepting program input in a trusted environment. Prior to 8.4, RestrictedPython could allow a sandbox escape when a custom import policy or globals exposed the standard library string module, the string.Formatter class, a Formatter instance, or a Formatter subclass to restricted code. The string.Formatter methods format, get_field, get_value, and vformat performed attribute and item traversal internally without passing through RestrictedPython's safer_getattr protections. Restricted code could use those live object references to reach function globals, builtins, file access, or code execution primitives, affecting confidentiality, integrity, and availability in the host environment. This issue is fixed in version 8.4.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 18:21 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/zopefoundation/RestrictedPytho… | x_refsource_CONFIRM |
| https://github.com/zopefoundation/RestrictedPytho… | x_refsource_MISC |
| https://github.com/zopefoundation/RestrictedPytho… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zopefoundation | RestrictedPython |
Affected:
< 8.4
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CVE-2026-70651 (GCVE-0-2026-70651)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:05 – Updated: 2026-08-25 15:25
VLAI
EPSS
VEX
Title
libvips: Possible integer overflow when reading multi-page TIFF images via ImageMagick
Summary
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, libvips built without libtiff support but with ImageMagick support can overflow the combined frame height while loading a crafted multi-page TIFF through VipsForeignLoadMagick. The vulnerable calculations in libvips/foreign/magick6load.c and libvips/foreign/magick7load.c multiply the per-page Ysize by n_frames without a checked bound, which can cause a heap buffer over-read and process crash. Most package-manager builds include libtiff and do not use this affected fallback path. 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 2026-08-25 15:25 UTC
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libvips/libvips/security/advis… | x_refsource_CONFIRM |
| https://github.com/libvips/libvips/pull/5040 | x_refsource_MISC |
| https://github.com/libvips/libvips/commit/05719ca… | x_refsource_MISC |
| https://github.com/libvips/libvips/releases/tag/v8.18.3 | x_refsource_MISC |
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CVE-2026-55200 (GCVE-0-2026-55200)
Vulnerability from cvelistv5 – Published: 2026-06-17 19:03 – Updated: 2026-10-22 18:33 X_Open Source
VLAI
EPSS
VEX
Title
libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c
Summary
libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 00:00 UTC
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libssh2/libssh2/pull/2052 | issue-tracking |
| https://github.com/libssh2/libssh2/commit/97acf3d… | patch |
| https://www.vulncheck.com/advisories/libssh2-out-… | third-party-advisory |
| https://web.archive.org/web/20260623211210/https:… | exploit |
Impacted products
Date Public
2026-06-12 00:00
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CVE-2026-43627 (GCVE-0-2026-43627)
Vulnerability from cvelistv5 – Published: 2026-08-06 15:40 – Updated: 2026-08-14 16:49 X_Open Source
VLAI
EPSS
VEX
Title
llama.cpp b1283–b9058 Integer Overflow in llama_batch_init() Function
Summary
llama.cpp builds b1283 through b9058 contain an integer overflow vulnerability in the llama_batch_init() function where unchecked multiplications in malloc() calls can wrap past INT32_MAX when computing allocation sizes. Attackers can pass specially crafted parameters to trigger integer overflow, causing heap corruption and potentially achieving arbitrary code execution through subsequent batch operations that write past allocated buffer boundaries.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 02:07 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Vladimir-tokarev-cyera/llama-c… | mitigation |
| https://www.vulncheck.com/advisories/llama-cpp-b1… | third-party-advisory |
Impacted products
Date Public
2026-05-06 00:00
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CVE-2026-25541 (GCVE-0-2026-25541)
Vulnerability from cvelistv5 – Published: 2026-02-04 22:03 – Updated: 2026-02-05 15:13
VLAI
EPSS
VEX
Title
Bytes is vulnerable to integer overflow in BytesMut::reserve
Summary
Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition "v_capacity >= new_cap + offset" uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB. This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks. This issue has been patched in version 1.11.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-05 15:13 UTC
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tokio-rs/bytes/security/adviso… | x_refsource_CONFIRM |
| https://github.com/tokio-rs/bytes/commit/d0293b0e… | x_refsource_MISC |
| https://github.com/tokio-rs/bytes/releases/tag/v1.11.1 | x_refsource_MISC |
| https://rustsec.org/advisories/RUSTSEC-2026-0007.html | x_refsource_MISC |
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CVE-2026-24928 (GCVE-0-2026-24928)
Vulnerability from cvelistv5 – Published: 2026-02-06 09:15 – Updated: 2026-02-06 16:04
VLAI
EPSS
VEX
Summary
Out-of-bounds write vulnerability in the file system module.
Impact: Successful exploitation of this vulnerability may affect service confidentiality.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-06 16:04 UTC
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
1 reference
Impacted products
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No mitigation information available for this CWE.
CAPEC-10: Buffer Overflow via Environment Variables
This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the adversary finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
CAPEC-100: Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.
CAPEC-14: Client-side Injection-induced Buffer Overflow
This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service. This hostile service is created to deliver the correct content to the client software. For example, if the client-side application is a browser, the service will host a webpage that the browser loads.
CAPEC-24: Filter Failure through Buffer Overflow
In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
CAPEC-45: Buffer Overflow via Symbolic Links
This type of attack leverages the use of symbolic links to cause buffer overflows. An adversary can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
CAPEC-46: Overflow Variables and Tags
This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The adversary crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
CAPEC-47: Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the adversary knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
CAPEC-67: String Format Overflow in syslog()
This attack targets applications and software that uses the syslog() function insecurely. If an application does not explicitely use a format string parameter in a call to syslog(), user input can be placed in the format string parameter leading to a format string injection attack. Adversaries can then inject malicious format string commands into the function call leading to a buffer overflow. There are many reported software vulnerabilities with the root cause being a misuse of the syslog() function.
CAPEC-8: Buffer Overflow in an API Call
This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An adversary who has knowledge of known vulnerable libraries or shared code can easily target software that makes use of these libraries. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
CAPEC-9: Buffer Overflow in Local Command-Line Utilities
This attack targets command-line utilities available in a number of shells. An adversary can leverage a vulnerability found in a command-line utility to escalate privilege to root.
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.