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).
3363 vulnerabilities reference this CWE, most recent first.
CVE-2026-43623 (GCVE-0-2026-43623)
Vulnerability from cvelistv5 – Published: 2026-06-01 18:04 – Updated: 2026-07-14 20:01 X_Open Source Unsupported When Assigned
VLAI
EPSS
VEX
Title
microtar 0.1.0 Stack-Based Buffer Overflow via raw_to_header()
Summary
microtar through 0.1.0 contains a stack-based buffer overflow vulnerability in the raw_to_header() function in src/microtar.c that allows attackers to corrupt adjacent stack memory by supplying a crafted TAR archive with non-null-terminated name or linkname fields. The function uses strcpy() to copy 100-byte ustar format fields that lack null terminators, causing writes of up to 355 bytes into a 100-byte destination buffer when mtar_open(), mtar_find(), or mtar_read_header() process attacker-supplied TAR archives.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 15:38 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/rxi/microtar/issues/28 | issue-tracking |
| https://github.com/rxi/microtar/issues/29 | issue-tracking |
| https://github.com/rxi/microtar/issues/30 | issue-tracking |
| https://www.vulncheck.com/advisories/microtar-sta… | third-party-advisory |
Date Public
2026-02-16 00:00
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CVE-2026-42996 (GCVE-0-2026-42996)
Vulnerability from cvelistv5 – Published: 2026-05-01 06:42 – Updated: 2026-05-01 22:10
VLAI
EPSS
VEX
Summary
JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a radio transmission of @APRSIS GRID followed by a long Maidenhead locator. This occurs in grid2deg in APRSISClient.cpp.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-01 13:24 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
mitre
CNA
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| JS8Call | JS8Call |
Affected:
0 , ≤ 2.3.1
(semver)
|
|
| JS8Call-improved | JS8Call-improved |
Affected:
0 , < 3.0
(custom)
|
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CVE-2026-42919 (GCVE-0-2026-42919)
Vulnerability from cvelistv5 – Published: 2026-05-13 14:12 – Updated: 2026-05-14 03:56
VLAI
EPSS
VEX
Title
F5 BIG-IP Appliance Mode Vulnerability
Summary
A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 00:00 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
f5
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://my.f5.com/manage/s/article/K000158971 | vendor-advisorypatch |
Impacted products
Date Public
2026-05-13 14:00
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CVE-2026-42854 (GCVE-0-2026-42854)
Vulnerability from cvelistv5 – Published: 2026-05-12 21:56 – Updated: 2026-05-13 14:24
VLAI
EPSS
VEX
Title
arduino-esp32: Stack buffer overflow in WebServer multipart boundary parsing leads to remote crash potential RCE
Summary
arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, the WebServer multipart form parser in arduino-esp32 allocates a Variable Length Array (VLA) on the stack whose size is derived from an attacker-controlled HTTP header field (Content-Type: multipart/form-data; boundary=...) without enforcing any length limit. Sending a boundary string longer than ~8000 characters overflows the 8192-byte task stack of the loopTask, causing a crash and potential remote code execution. This vulnerability is fixed in 3.3.8.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 14:24 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/espressif/arduino-esp32/securi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| espressif | arduino-esp32 |
Affected:
< 3.3.8
|
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CVE-2026-42050 (GCVE-0-2026-42050)
Vulnerability from cvelistv5 – Published: 2026-05-11 19:46 – Updated: 2026-05-12 13:30
VLAI
EPSS
VEX
Title
ImageMagick: Stack buffer overflow in XTileImage
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-21 and 6.9.13-46, a malicious MIFF file could trigger an overflow when a user opens it in the display tool and right-clicks a tile to invoke the Load / Update menu item. This vulnerability is fixed in 7.1.2-21 and 6.9.13-46.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 13:30 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
< 6.9.13-46
Affected: >= 7.0.0, < 7.1.2-20 |
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CVE-2026-42026 (GCVE-0-2026-42026)
Vulnerability from cvelistv5 – Published: 2026-10-20 20:25 – Updated: 2026-10-23 22:08
VLAI
EPSS
VEX
Summary
Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the dhcp_dns2 parameter.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 20:45 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
talos
CNA
References
1 reference
Impacted products
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CVE-2026-42025 (GCVE-0-2026-42025)
Vulnerability from cvelistv5 – Published: 2026-10-20 20:25 – Updated: 2026-10-23 22:08
VLAI
EPSS
VEX
Summary
Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup dhcp_dns functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the dhcp_dns1 parameter.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 20:45 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
talos
CNA
References
1 reference
Impacted products
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CVE-2026-42024 (GCVE-0-2026-42024)
Vulnerability from cvelistv5 – Published: 2026-10-20 20:25 – Updated: 2026-10-23 22:07
VLAI
EPSS
VEX
Summary
Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configuration functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the static_gw parameter.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 20:45 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
talos
CNA
References
1 reference
Impacted products
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CVE-2026-42023 (GCVE-0-2026-42023)
Vulnerability from cvelistv5 – Published: 2026-10-20 20:25 – Updated: 2026-10-23 22:07
VLAI
EPSS
VEX
Summary
Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configuration functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the static_ipv6 parameter.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 20:45 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
talos
CNA
References
1 reference
Impacted products
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CVE-2026-42022 (GCVE-0-2026-42022)
Vulnerability from cvelistv5 – Published: 2026-10-20 20:25 – Updated: 2026-10-23 22:08
VLAI
EPSS
VEX
Summary
Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configuration functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the static_dns2 parameter.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 20:45 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
talos
CNA
References
1 reference
Impacted products
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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.