Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
16160 vulnerabilities reference this CWE, most recent first.
CVE-2026-64608 (GCVE-0-2026-64608)
Vulnerability from cvelistv5 – Published: 2026-07-21 09:34 – Updated: 2026-07-21 18:28
VLAI
EPSS
VEX
Title
Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths
Summary
Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compatible mode, the field-skip paths do not correctly validate the declared field types against the actual data, so input with an inconsistent schema can cause type confusion and out-of-bounds memory access. Only the C++ implementation is affected; other language implementations of Apache Fory are not.
This issue affects Apache Fory C++: from 0.14.0 before 1.4.0.
Users are recommended to upgrade to version 1.4.0, which fixes the issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 13:39 UTC
CWE
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Fory |
Affected:
0.14.0 , < 1.4.0
(semver)
|
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CVE-2026-64204 (GCVE-0-2026-64204)
Vulnerability from cvelistv5 – Published: 2026-08-25 16:52 – Updated: 2026-08-26 03:56
VLAI
EPSS
VEX
Title
Out-of-Bounds Write Vulnerability in NI LabVIEW when loading VI
Summary
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discovered in NI LabVIEW that may result in information disclosure or arbitrary
code execution. Successful exploitation requires an attacker to get a
user to open a specially crafted VI. This vulnerability affects NI
LabVIEW 2026 Q3 (26.3.0) and prior versions.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 00:00 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NI | LabVIEW |
Affected:
0 , < 23.0.0
(semver)
Affected: 23.1.0 , < 23.3.10 (semver) Affected: 24.1.0 , < 24.3.7 (semver) Affected: 25.1.0 , < 25.3.5 (semver) Affected: 26.1.0 , < 26.3.1 (semver) cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:* cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:* cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:* cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:* cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:* |
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CVE-2026-64197 (GCVE-0-2026-64197)
Vulnerability from cvelistv5 – Published: 2026-09-03 21:49 – Updated: 2026-09-04 18:26
VLAI
EPSS
VEX
Title
Out Of Bounds Write when parsing a .DSB file in DASYLab due to improper validation of user-supplied data, resulting in a write past the end of an allocated data structure
Summary
There is an out-of-bounds write vulnerability in DASYLab due to improper validation of user-supplied data, resulting in a write past the end of an allocated data structure. Successful exploitation requires an attacker to get a user to open a specially crafted .DSB file. This issue affects all versions before 2026.0.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 17:09 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
Impacted products
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CVE-2026-64196 (GCVE-0-2026-64196)
Vulnerability from cvelistv5 – Published: 2026-09-03 21:46 – Updated: 2026-09-04 18:26
VLAI
EPSS
VEX
Title
Out Of Bounds Write when parsing a .DSB file in DASYLab due to improper validation of user-supplied data, resulting in a write past the end of an allocated heap
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 17:08 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
Impacted products
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CVE-2026-64195 (GCVE-0-2026-64195)
Vulnerability from cvelistv5 – Published: 2026-09-03 21:43 – Updated: 2026-09-04 18:26
VLAI
EPSS
VEX
Title
Out Of Bounds Write parsing a .DSB file in DASYLab due to lack of proper validation of user-supplied data
Summary
There is an out-of-bounds write vulnerability in DASYLab due to lack of proper validation of user-supplied data. Successful exploitation requires an attacker to get a user to open a specially crafted .DSB file. This issue affects all versions before 2026.0.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 17:08 UTC
CWE
- CWE-787 - Out-of-bounds write
Assigner
References
1 reference
Impacted products
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CVE-2026-63638 (GCVE-0-2026-63638)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:47 – Updated: 2026-09-22 14:48
VLAI
EPSS
VEX
Title
OpenImageIO: Cineon invalid bit depth heap out-of-bounds write
Summary
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A crafted cineon image can declare unsupported component bit depth 26. cineoninput::open() maps it to a 32-bit imagespec, but libcineon maps the unsupported depth to an 8-byte value, so cineoninput::read_native_scanline() causes attacker-controlled data to be written beyond the 4-byte-per-pixel caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/cineon.imageio/cineoninput.cpp, CineonInput::open(), CineonInput::read_native_scanline(), ComponentDataSize(), bit depth 26, and ImageSpec, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
Severity
8.3 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 14:47 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_CONFIRM |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AcademySoftwareFoundation | OpenImageIO |
Affected:
< 3.0.21.0
Affected: >= 3.1.0.0, < 3.1.16.0 Affected: >= 3.2.0.0-dev, < 3.2.0.3-beta1 |
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CVE-2026-63422 (GCVE-0-2026-63422)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:37 – Updated: 2026-09-21 20:50
VLAI
EPSS
VEX
Title
OpenImageIO OpenEXR plugin partial edge tile heap out-of-bounds write
Summary
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:24 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_CONFIRM |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AcademySoftwareFoundation | OpenImageIO |
Affected:
< 3.0.21.0
Affected: >= 3.1.0.0, < 3.1.16.0 Affected: >= 3.2.0.0-dev, < 3.2.0.3-beta1 |
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CVE-2026-63419 (GCVE-0-2026-63419)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:46 – Updated: 2026-09-18 17:34
VLAI
EPSS
VEX
Title
OpenImageIO: IFF ZBUFFER tile read writes past caller tile buffer
Summary
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A zbuffer-only tiled iff is exposed with a 16-bit public imagespec while the decoder retains a 32-bit internal pixel size. iffinput::read_native_tile() copies according to m_header.pixel_bytes() rather than imagespec::tile_bytes(true), and a failed read can leave m_buf nonempty so a later call copies partially initialized data into the undersized caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::read_native_tile(), ImageSpec::tile_bytes(true), m_header.pixel_bytes(), ZBUFFER, and m_buf, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 17:33 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_CONFIRM |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
| https://github.com/AcademySoftwareFoundation/Open… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AcademySoftwareFoundation | OpenImageIO |
Affected:
< 3.0.21.0
Affected: >= 3.1.0.0, < 3.1.16.0 Affected: >= 3.2.0.0-dev, < 3.2.0.3-beta1 |
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CVE-2026-63388 (GCVE-0-2026-63388)
Vulnerability from cvelistv5 – Published: 2026-08-20 17:44 – Updated: 2026-08-21 21:46
VLAI
EPSS
VEX
Title
Libevent: Heap out-of-bounds write in bufferevent_socket_set_conn_address_ reachable via AF_UNIX accept
Summary
Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a heap out-of-bounds write in bufferevent_sock.c when bufferevent_socket_set_conn_address_ copies a kernel-supplied AF_UNIX peer address into bufferevent_private.conn_address. Release builds compiled with NDEBUG disable the EVUTIL_ASSERT length guard, and the evhttp accept path can pass a 110-byte sockaddr from accept() into the 28-byte field. An unauthenticated local peer able to connect to an AF_UNIX listener can overwrite the adjacent dns_request pointer and heap data, causing memory corruption with confidentiality, integrity, and availability impact. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 21:00 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/libevent/libevent/security/adv… | x_refsource_CONFIRM |
| https://github.com/libevent/libevent/commit/52057… | x_refsource_MISC |
| https://github.com/libevent/libevent/commit/ef38f… | x_refsource_MISC |
| https://github.com/libevent/libevent/releases/tag… | x_refsource_MISC |
| https://github.com/libevent/libevent/releases/tag… | x_refsource_MISC |
Impacted products
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CVE-2026-63387 (GCVE-0-2026-63387)
Vulnerability from cvelistv5 – Published: 2026-08-20 17:53 – Updated: 2026-08-25 15:12
VLAI
EPSS
VEX
Title
Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response
Summary
Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsname_to_labels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdns_server_request_format_response. The final-label check permits j plus label_len plus one to equal buf_len, after which the terminating null byte is written to buf[buf_len]. A crafted DNS server response containing PTR, CNAME, MX, NS, or SOA data can trigger the one-byte out-of-bounds write and crash or corrupt the process. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 15:11 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/libevent/libevent/security/adv… | x_refsource_CONFIRM |
| https://github.com/libevent/libevent/releases/tag… | x_refsource_MISC |
| https://github.com/libevent/libevent/releases/tag… | x_refsource_MISC |
Impacted products
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"x_refsource_CONFIRM"
],
"url": "https://github.com/libevent/libevent/security/advisories/GHSA-58rx-7448-jw47"
},
{
"name": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable"
},
{
"name": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha"
}
],
"source": {
"advisory": "GHSA-58rx-7448-jw47",
"discovery": "UNKNOWN"
},
"title": "Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-63387",
"datePublished": "2026-08-20T17:53:41.863Z",
"dateReserved": "2026-07-16T17:39:30.171Z",
"dateUpdated": "2026-08-25T15:12:12.129Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
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-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
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 MIT-12
Operation
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.