Weakness (CWE)
CWE-787: Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
How to prevent it (7 mitigations)
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Requirements
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.
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Architecture and Design
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.
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Operation, Build and Compilation
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.
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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.
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Operation, Build and Compilation
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].
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Operation
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].
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Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Source: MITRE CWE-787
3,640 results · Clear filters · Feed
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High 7.5
Out-of-bounds Write in zlib affects Nokogiri
## Summary Nokogiri v1.13.4 updates the vendored zlib from 1.2.11 to 1.2.12, which addresses [CVE-2018-25032](https://nvd.nist.gov/vuln/detail/CVE-2018-25032). That CVE is scored as CVSS 7.4 "High" on the NVD record as of 2022-04-05. Please note that this adv…
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High 8.8
ASUS RT-AC86U - Heap-based buffer overflow
ASUS RT-AC56U’s configuration function has a heap-based buffer overflow vulnerability due to insufficient validation for the decryption parameter length, which allows an unauthenticated LAN attacker to execute arbitrary code, perform arbitrary operations and …
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High 8.8
ASUS RT-AX56U - Stack overflew
ASUS RT-AX56U’s user profile configuration function is vulnerable to stack-based buffer overflow due to insufficient validation for parameter length. An unauthenticated LAN attacker can execute arbitrary code to perform arbitrary operations or disrupt service.
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High 7.6
Out-of-bounds Write in libr/bin/format/ne/ne.c in radareorg/radare2
Out-of-bounds Write in libr/bin/format/ne/ne.c in GitHub repository radareorg/radare2 prior to 5.6.8. This vulnerability is heap overflow and may be exploitable. For more general description of heap buffer overflow, see [CWE](https://cwe.mitre.org/data/defini…
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High 7.8
Rockwell Automation Studio 5000 Logix Designer Out-of-Bounds Write
Omron CX-Position (versions 2.5.3 and prior) is vulnerable to an out-of-bounds write while processing a specific project file, which may allow an attacker to execute arbitrary code.
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High 7.8
Bandisoft ARK Library Out-of-bound Vulnerability
A remote code execution vulnerability due to incomplete check for 'xheader_decode_path_record' function's parameter length value in the ark library. Remote attackers can induce exploit malicious code using this function.
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High 7.8
An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem. This…
KEV Aug 26, 2026 -
High 7.5
Nokogiri affected by zlib's Out-of-bounds Write vulnerability
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.
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High 7.8
Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation…
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High 7.8
Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation…
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High 7.8CVE-2021-39793 Exploited
In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the…
KEV Apr 11, 2022 -
High 7.8
Adobe After Effects Out-of-bounds Write could lead to Arbitrary code execution
Adobe After Effects versions 22.2 (and earlier) and 18.4.4 (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interactio…
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High 7.5CVE-2020-36518 Public exploit
Deeply nested json in jackson-databind
jackson-databind before 2.13.0 allows a Java StackOverflow exception and denial of service via a large depth of nested objects.
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High 7.8
VP9 Video Extensions Remote Code Execution Vulnerability
VP9 Video Extensions Remote Code Execution Vulnerability
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High 7.8
HEIF Image Extensions Remote Code Execution Vulnerability
HEIF Image Extensions Remote Code Execution Vulnerability
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High 7.8
VP9 Video Extensions Remote Code Execution Vulnerability
VP9 Video Extensions Remote Code Execution Vulnerability
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High 7.8
Paint 3D Remote Code Execution Vulnerability
Paint 3D Remote Code Execution Vulnerability
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High 7.8
ICSA-22-055-01 FATEK Automation FvDesigner
The affected product is vulnerable to an out-of-bounds write while processing project files, which allows an attacker to craft a project file that would allow arbitrary code execution.
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High 8.8
The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple S…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pr…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pr…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pr…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pr…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pr…
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High 7.8
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High 7.8
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High 7.8
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High 7.8
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High 7.8
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.…
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High 7.8
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation …
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High 7.8
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High 7.8
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High 7.8
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High 7.8
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High 7.8
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation …