CWE-787
Weakness 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.
Dimensions
- Behavior-Type: Write
- Resource-Type: Memory Buffer
- Resource-Property: Out-of-bounds
Mapping guidance
This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities. However, closer examination is required.
While this CWE is allowed for mapping, it has more specific children that might be a better fit. Carefully read both the name and description to ensure that this mapping is appropriate. Consider the root cause errors that have led to the out-of-bounds write by examining "CanFollow" relationships for this entry.
Relationships and members
Modes of introduction
Detection methods
Automated Static Analysis
This weakness can often be detected using automated static analysis tools. Many modern tools use data flow analysis or constraint-based techniques to minimize the number of false positives.
Automated static analysis generally does not account for environmental considerations when reporting out-of-bounds memory operations. This can make it difficult for users to determine which warnings should be investigated first. For example, an analysis tool might report buffer overflows that originate from command line arguments in a program that is not expected to run with setuid or other special privileges.
Effectiveness: High
Detection techniques for buffer-related errors are more mature than for most other weakness types.
Automated Dynamic Analysis
This weakness can be detected using dynamic tools and techniques that interact with the software using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The software's operation may slow down, but it should not become unstable, crash, or generate incorrect results.
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Content history
Suggested mappings to ISA/IEC 62443.
Provided diagram to improve CWE usability
updated Demonstrative_Examples
updated Relationships
updated Common_Consequences
updated Demonstrative_Examples
updated Relationships
updated Description
updated Applicable_Platforms, Demonstrative_Examples, Detection_Factors, Likelihood_of_Exploit, Observed_Examples, Potential_Mitigations, References, Relationships, Time_of_Introduction
updated Observed_Examples, Relationships
updated Observed_Examples
updated Alternate_Terms, Demonstrative_Examples, Observed_Examples, Relationships
updated Relationships
updated Demonstrative_Examples
updated Demonstrative_Examples, Potential_Mitigations, Relationships
updated Observed_Examples, Relationships
updated Applicable_Platforms
updated Alternate_Terms, Demonstrative_Examples, Description
updated Potential_Mitigations, References, Relationships, Taxonomy_Mappings
updated Mapping_Notes, Relationships, Taxonomy_Mappings
updated Demonstrative_Examples
updated Alternate_Terms, Common_Consequences, Description, Diagram, Weakness_Ordinalities
updated Observed_Examples, Relationships
updated Observed_Examples, Relationships
updated Affected_Resources, Functional_Areas, References
updated Applicable_Platforms, Detection_Factors, References, Relationships
updated Mapping_Notes
updated Dimensions, Observed_Examples, References, Relationships, Taxonomy_Mappings
17070 vulnerabilities reference this CWE, most recent first.
GHSA-VVVP-MQXF-GJFR
Vulnerability from github – Published: 2022-11-02 12:00 – Updated: 2022-11-02 19:00An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in tvOS 16, iOS 16, watchOS 9. An app may be able to cause unexpected system termination or write kernel memory.
{
"affected": [],
"aliases": [
"CVE-2022-32925"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-01T20:15:00Z",
"severity": "HIGH"
},
"details": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in tvOS 16, iOS 16, watchOS 9. An app may be able to cause unexpected system termination or write kernel memory.",
"id": "GHSA-vvvp-mqxf-gjfr",
"modified": "2022-11-02T19:00:25Z",
"published": "2022-11-02T12:00:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32925"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213446"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213486"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213487"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VVVW-VW2W-V699
Vulnerability from github – Published: 2022-05-24 19:12 – Updated: 2022-10-24 19:00Adobe Bridge version 11.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious Bridge file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2021-36049"
],
"database_specific": {
"cwe_ids": [
"CWE-787",
"CWE-788"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-01T15:15:00Z",
"severity": "HIGH"
},
"details": "Adobe Bridge version 11.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious Bridge file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.",
"id": "GHSA-vvvw-vw2w-v699",
"modified": "2022-10-24T19:00:23Z",
"published": "2022-05-24T19:12:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36049"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/bridge/apsb21-69.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VVWM-9CQ7-J8MV
Vulnerability from github – Published: 2023-07-18 15:30 – Updated: 2024-04-04 06:13An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.
{
"affected": [],
"aliases": [
"CVE-2021-34123"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-18T14:15:11Z",
"severity": "CRITICAL"
},
"details": "An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.",
"id": "GHSA-vvwm-9cq7-j8mv",
"modified": "2024-04-04T06:13:24Z",
"published": "2023-07-18T15:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34123"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/atasm/bugs/23"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VVX6-P7XX-H39J
Vulnerability from github – Published: 2025-12-05 00:31 – Updated: 2026-08-10 18:31An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via specially crafted IPSec configuration CLI commands.This vulnerability affects Fireware OS 11.0 up to and including 11.12.4+541730, 12.0 up to and including 12.11.4, 12.5 up to and including 12.5.13, and 2025.1 up to and including 2025.1.2.
{
"affected": [],
"aliases": [
"CVE-2025-12195"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-04T22:15:46Z",
"severity": "HIGH"
},
"details": "An Out-of-bounds Write vulnerability in WatchGuard Fireware OS\u0027s CLI could allow an authenticated privileged user to execute arbitrary code\u00a0via specially crafted IPSec configuration CLI commands.This vulnerability affects Fireware OS 11.0 up to and including 11.12.4+541730, 12.0 up to and including 12.11.4, 12.5 up to and including 12.5.13, and 2025.1 up to and including 2025.1.2.",
"id": "GHSA-vvx6-p7xx-h39j",
"modified": "2026-08-10T18:31:59Z",
"published": "2025-12-05T00:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12195"
},
{
"type": "WEB",
"url": "https://psirt.watchguard.com/CVE-2025-12195"
},
{
"type": "WEB",
"url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00019"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-VVXW-RRJP-6X6F
Vulnerability from github – Published: 2022-12-06 09:30 – Updated: 2022-12-07 15:30In wlan driver, there is a possible missing bounds check, This could lead to local denial of service in wlan services.
{
"affected": [],
"aliases": [
"CVE-2022-39133"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-06T07:15:00Z",
"severity": "MODERATE"
},
"details": "In wlan driver, there is a possible missing bounds check, This could lead to local denial of service in wlan services.",
"id": "GHSA-vvxw-rrjp-6x6f",
"modified": "2022-12-07T15:30:29Z",
"published": "2022-12-06T09:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39133"
},
{
"type": "WEB",
"url": "https://www.unisoc.com/en_us/secy/announcementDetail/1599588060988411006"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VW24-C2GM-HPJC
Vulnerability from github – Published: 2022-05-24 17:34 – Updated: 2022-05-24 17:34A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution when malicious CGF (Configuration Group File) file is imported to IGSS Definition.
{
"affected": [],
"aliases": [
"CVE-2020-7556"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-11-19T22:15:00Z",
"severity": "HIGH"
},
"details": "A CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution when malicious CGF (Configuration Group File) file is imported to IGSS Definition.",
"id": "GHSA-vw24-c2gm-hpjc",
"modified": "2022-05-24T17:34:44Z",
"published": "2022-05-24T17:34:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7556"
},
{
"type": "WEB",
"url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-03"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-095"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VW29-HGCP-PXGR
Vulnerability from github – Published: 2023-04-12 18:30 – Updated: 2024-04-04 03:25client.c in gdhcp in ConnMan through 1.41 could be used by network-adjacent attackers (operating a crafted DHCP server) to cause a stack-based buffer overflow and denial of service, terminating the connman process.
{
"affected": [],
"aliases": [
"CVE-2023-28488"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-12T16:15:00Z",
"severity": "MODERATE"
},
"details": "client.c in gdhcp in ConnMan through 1.41 could be used by network-adjacent attackers (operating a crafted DHCP server) to cause a stack-based buffer overflow and denial of service, terminating the connman process.",
"id": "GHSA-vw29-hgcp-pxgr",
"modified": "2024-04-04T03:25:30Z",
"published": "2023-04-12T18:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28488"
},
{
"type": "WEB",
"url": "https://github.com/moehw/poc_exploits/tree/master/CVE-2023-28488"
},
{
"type": "WEB",
"url": "https://kernel.googlesource.com/pub/scm/network/connman/connman/+/99e2c16ea1cced34a5dc450d76287a1c3e762138"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00024.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5416"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VW2F-9QH4-W759
Vulnerability from github – Published: 2026-10-21 00:32 – Updated: 2026-10-21 03:32Out of bounds write in Forms in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)
{
"affected": [],
"aliases": [
"CVE-2026-113300"
],
"database_specific": {
"cwe_ids": [
"CWE-203",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-20T22:19:24Z",
"severity": "CRITICAL"
},
"details": "Out of bounds write in Forms in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)",
"id": "GHSA-vw2f-9qh4-w759",
"modified": "2026-10-21T03:32:11Z",
"published": "2026-10-21T00:32:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113300"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/513468106"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VW2G-5827-M9FP
Vulnerability from github – Published: 2021-03-29 20:55 – Updated: 2021-03-23 15:20A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka 'Chakra Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-1307, CVE-2019-1335, CVE-2019-1366.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-1308"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2021-03-23T15:20:17Z",
"nvd_published_at": "2019-10-10T14:15:00Z",
"severity": "HIGH"
},
"details": "A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka \u0027Chakra Scripting Engine Memory Corruption Vulnerability\u0027. This CVE ID is unique from CVE-2019-1307, CVE-2019-1335, CVE-2019-1366.",
"id": "GHSA-vw2g-5827-m9fp",
"modified": "2021-03-23T15:20:17Z",
"published": "2021-03-29T20:55:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-1308"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/64376deca69126c2bb05cd87bd5c073aedaf5f9c"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/cc871514deeaeaedb5b757c2ca8cd4ab9abccb5d"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1308"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Out-of-bounds write"
}
GHSA-VW2H-JP7J-6FQ2
Vulnerability from github – Published: 2022-05-13 01:01 – Updated: 2022-05-13 01:01An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially crafted x509 certificate can cause a buffer overflow on the heap resulting in remote code execution. To trigger this vulnerability, a specially crafted x509 certificate must be presented to the vulnerable client or server application when initiating secure connection.
{
"affected": [],
"aliases": [
"CVE-2017-2781"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-06-22T21:29:00Z",
"severity": "CRITICAL"
},
"details": "An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially crafted x509 certificate can cause a buffer overflow on the heap resulting in remote code execution. To trigger this vulnerability, a specially crafted x509 certificate must be presented to the vulnerable client or server application when initiating secure connection.",
"id": "GHSA-vw2h-jp7j-6fq2",
"modified": "2022-05-13T01:01:28Z",
"published": "2022-05-13T01:01:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2781"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2017-0277"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/99249"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-3
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
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
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
- 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
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
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
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.