Common Weakness Enumeration
CWE-121
AllowedStack-based Buffer Overflow
Abstraction: Variant · Status: Draft
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
5237 vulnerabilities reference this CWE, most recent first.
GHSA-8HP7-6MR2-85PV
Vulnerability from github – Published: 2024-12-19 12:32 – Updated: 2024-12-19 12:32
VLAI
Details
Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.
Severity
5.4 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-12820"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-19T11:15:05Z",
"severity": "MODERATE"
},
"details": "Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.",
"id": "GHSA-8hp7-6mr2-85pv",
"modified": "2024-12-19T12:32:40Z",
"published": "2024-12-19T12:32:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12820"
},
{
"type": "WEB",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-20-083"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-8HRP-2FQV-GVRX
Vulnerability from github – Published: 2026-04-10 09:31 – Updated: 2026-04-10 09:31
VLAI
Details
A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds checking, resulting in a stack buffer overflow and application crash (STATUS_STACK_BUFFER_OVERRUN).
Severity
6.0 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-5525"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-10T08:16:26Z",
"severity": "MODERATE"
},
"details": "A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds checking, resulting in a stack buffer overflow and application crash (STATUS_STACK_BUFFER_OVERRUN).",
"id": "GHSA-8hrp-2fqv-gvrx",
"modified": "2026-04-10T09:31:16Z",
"published": "2026-04-10T09:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5525"
},
{
"type": "WEB",
"url": "https://github.com/notepad-plus-plus/notepad-plus-plus/issues/17921"
},
{
"type": "WEB",
"url": "https://github.com/notepad-plus-plus/notepad-plus-plus/pull/17930"
},
{
"type": "WEB",
"url": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/bfe7514d68bc559534c046c4ef2d1865267aa2b0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-8HRW-QMJC-QR28
Vulnerability from github – Published: 2024-07-16 18:31 – Updated: 2024-07-19 21:31
VLAI
Details
Tenda AC18 V15.03.3.10_EN was discovered to contain a stack-based buffer overflow vulnerability via the deviceId parameter at ip/goform/addWifiMacFilter.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2024-33182"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-16T16:15:04Z",
"severity": "CRITICAL"
},
"details": "Tenda AC18 V15.03.3.10_EN was discovered to contain a stack-based buffer overflow vulnerability via the deviceId parameter at ip/goform/addWifiMacFilter.",
"id": "GHSA-8hrw-qmjc-qr28",
"modified": "2024-07-19T21:31:10Z",
"published": "2024-07-16T18:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33182"
},
{
"type": "WEB",
"url": "https://palm-vertebra-fe9.notion.site/addWifiMacFilter_1-067fa6984f0d4933b88c63efd7486479"
}
],
"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-8J2C-WGM2-C4H8
Vulnerability from github – Published: 2024-01-26 18:30 – Updated: 2024-01-26 18:30
VLAI
Details
A vulnerability was found in Tenda AC10U 15.03.06.49_multi_TDE01. It has been rated as critical. Affected by this issue is the function fromNatStaticSetting. The manipulation of the argument page leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-252134 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Severity
4.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-0929"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-26T16:15:22Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in Tenda AC10U 15.03.06.49_multi_TDE01. It has been rated as critical. Affected by this issue is the function fromNatStaticSetting. The manipulation of the argument page leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-252134 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-8j2c-wgm2-c4h8",
"modified": "2024-01-26T18:30:34Z",
"published": "2024-01-26T18:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0929"
},
{
"type": "WEB",
"url": "https://github.com/yaoyue123/iot/blob/main/Tenda/AC10U/fromNatStaticSetting.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.252134"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.252134"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-8J5G-957R-VPVW
Vulnerability from github – Published: 2023-09-21 15:30 – Updated: 2024-04-04 07:47
VLAI
Details
D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter flag_5G in showMACfilterMAC.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2023-43239"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-21T13:15:10Z",
"severity": "CRITICAL"
},
"details": "D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter flag_5G in showMACfilterMAC.",
"id": "GHSA-8j5g-957r-vpvw",
"modified": "2024-04-04T07:47:31Z",
"published": "2023-09-21T15:30:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43239"
},
{
"type": "WEB",
"url": "https://github.com/peris-navince/founded-0-days/blob/main/Dlink/816/showMACfilterMAC/1.md"
},
{
"type": "WEB",
"url": "https://www.dlink.com/en/security-bulletin"
}
],
"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-8J7G-RJC3-PCJW
Vulnerability from github – Published: 2026-02-21 00:31 – Updated: 2026-02-21 00:31
VLAI
Details
Foscam Video Management System 1.1.6.6 contains a buffer overflow vulnerability in the UID field that allows local attackers to crash the application by supplying an excessively long string. Attackers can input a 5000-character buffer into the UID parameter during device addition to trigger an application crash when the Login Check function is invoked.
Severity
6.2 (Medium)
{
"affected": [],
"aliases": [
"CVE-2019-25437"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-20T23:16:00Z",
"severity": "MODERATE"
},
"details": "Foscam Video Management System 1.1.6.6 contains a buffer overflow vulnerability in the UID field that allows local attackers to crash the application by supplying an excessively long string. Attackers can input a 5000-character buffer into the UID parameter during device addition to trigger an application crash when the Login Check function is invoked.",
"id": "GHSA-8j7g-rjc3-pcjw",
"modified": "2026-02-21T00:31:42Z",
"published": "2026-02-21T00:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25437"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/47478"
},
{
"type": "WEB",
"url": "https://www.foscam.com"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/foscam-video-management-system-buffer-overflow-denial-of-service"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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-8JVM-993Q-HXFR
Vulnerability from github – Published: 2025-08-28 18:30 – Updated: 2025-08-28 21:31
VLAI
Details
Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 was discovered to contain a stack overflow via the Password parameter in the function R7WebsSecurityHandler.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-57217"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-28T18:15:32Z",
"severity": "MODERATE"
},
"details": "Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 was discovered to contain a stack overflow via the Password parameter in the function R7WebsSecurityHandler.",
"id": "GHSA-8jvm-993q-hxfr",
"modified": "2025-08-28T21:31:25Z",
"published": "2025-08-28T18:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-57217"
},
{
"type": "WEB",
"url": "https://plaid-knot-11b.notion.site/Stack-Buffer-Overflow-in-login-Auth-via-Password-parameter-Remote-attacker-can-execute-arbitrary-c-23fb3e9cce32800ba969f8b3a9f80bda?source=copy_link"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-8JVR-397X-XQH9
Vulnerability from github – Published: 2026-06-09 00:33 – Updated: 2026-07-07 18:30
VLAI
Details
bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer. This could crash the process when processing untrusted data.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-9669"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-08T23:17:25Z",
"severity": "HIGH"
},
"details": "bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer. This could crash the process when processing untrusted data.",
"id": "GHSA-8jvr-397x-xqh9",
"modified": "2026-07-07T18:30:27Z",
"published": "2026-06-09T00:33:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9669"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/issues/150599"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/pull/150600"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/commit/157a5df8cb5d82b33f918a7489e72ce95ceb12b6"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/commit/5755d0f083949ff3c5bf3a37e673e24e306b036e"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/commit/619a12b2e545391dc436b3af79dda22337382a6f"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/commit/938ec030e90c5e53f1faac6fab1643f14e4f4a79"
},
{
"type": "WEB",
"url": "https://github.com/python/cpython/commit/d3ca26983dfbccdf609f24ff5877dc3118e4702d"
},
{
"type": "WEB",
"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/DBJZETMGUIFK7DVUWMOXHD3Z6IX2QPSX"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/06/08/17"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/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-8JWF-4FQW-CF73
Vulnerability from github – Published: 2023-06-06 18:30 – Updated: 2024-04-04 04:36
VLAI
Details
The affected application lacks proper validation of user-supplied data when parsing project files (e.g., CSP). This could lead to a stack-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-29503"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-06T17:15:13Z",
"severity": "HIGH"
},
"details": "\n\n\n\n\n\n\nThe affected application lacks proper validation of user-supplied data when parsing project files (e.g., CSP). This could lead to a stack-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process. \n\n\n\n\n\n\n\n",
"id": "GHSA-8jwf-4fqw-cf73",
"modified": "2024-04-04T04:36:13Z",
"published": "2023-06-06T18:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29503"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-143-04"
}
],
"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-8MHF-QQPQ-2VCR
Vulnerability from github – Published: 2025-09-09 09:31 – Updated: 2025-09-09 09:31
VLAI
Details
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), User Management Component (UMC) (All versions < V2.15.1.3). Affected products contain a stack-based buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to execute arbitrary code or to cause a denial of service condition.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2025-40795"
],
"database_specific": {
"cwe_ids": [
"CWE-121"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-09T09:15:37Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), User Management Component (UMC) (All versions \u003c V2.15.1.3). Affected products contain a stack-based buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to execute arbitrary code or to cause a denial of service condition.",
"id": "GHSA-8mhf-qqpq-2vcr",
"modified": "2025-09-09T09:31:11Z",
"published": "2025-09-09T09:31:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40795"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-722410.html"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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"
}
]
}
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
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Do not use dangerous functions such as gets. Use safer, equivalent functions which check for boundary errors.
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].
No CAPEC attack patterns related to this CWE.