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Common Weakness Enumeration

CWE-121

Allowed

Stack-based Buffer Overflow

Abstraction: Variant · Status: Draft

API response cwe.mitre.org

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).

5614 vulnerabilities reference this CWE, most recent first.

CVE-2026-86514 (GCVE-0-2026-86514)

Vulnerability from cvelistv5 – Published: 2026-09-08 02:45 – Updated: 2026-09-08 02:45 X_Open Source
VLAI
Title
vgmstream txth-txtp txth.c sscanf stack-based overflow
Summary
A weakness has been identified in vgmstream up to r2117. This issue affects the function sscanf of the file src/meta/txth.c of the component txth-txtp. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 4669d37a6af94866f6f0628678f9f90d46954e8b. To fix this issue, it is recommended to deploy a patch.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a vgmstream Affected: r2117
    cpe:2.3:a:vgmstream:vgmstream:*:*:*:*:*:*:*:*
Credits
ni-liao (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-86509 (GCVE-0-2026-86509)

Vulnerability from cvelistv5 – Published: 2026-09-08 00:45 – Updated: 2026-09-08 00:45
VLAI
Title
D-Link DIR-895L udhcpcd serverpacket.c sendACK stack-based overflow
Summary
A flaw has been found in D-Link DIR-895L A1_102b07. This impacts the function sendOffer/sendACK of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack can only be done within the local network. The exploit has been published and may be used.
Severity
9.4 (Critical)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
9.6 (Critical)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.6 (Critical)
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
CWE
Assigner
References
Impacted products
Vendor Product Version
D-Link DIR-895L Affected: A1_102b07
    cpe:2.3:h:d-link:dir-895l:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
tian (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-86318 (GCVE-0-2026-86318)

Vulnerability from cvelistv5 – Published: 2026-09-07 14:30 – Updated: 2026-09-08 13:03
VLAI
Title
java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow
Summary
A flaw has been found in java-json-tools json-patch up to 1.13. Affected is the function JsonMergePatch.fromJson of the file JsonMergePatchDeserializer.java. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
5.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:02 UTC
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/399509 vdb-entrytechnical-description
https://vuldb.com/vuln/399509/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86318 third-party-advisory
https://vuldb.com/submit/908319 third-party-advisory
https://github.com/java-json-tools/json-patch/iss… exploitissue-trackingpatch
https://github.com/java-json-tools/json-patch/ patchproduct
Impacted products
Vendor Product Version
java-json-tools json-patch Affected: 1.0
Affected: 1.1
Affected: 1.2
Affected: 1.3
Affected: 1.4
Affected: 1.5
Affected: 1.6
Affected: 1.7
Affected: 1.8
Affected: 1.9
Affected: 1.10
Affected: 1.11
Affected: 1.12
Affected: 1.13
    cpe:2.3:a:java-json-tools:json-patch:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
York Shen - Yong Shen - PayPal Cyber Security Team (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-86296 (GCVE-0-2026-86296)

Vulnerability from cvelistv5 – Published: 2026-09-07 10:30 – Updated: 2026-09-08 16:48
VLAI
Title
D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow
Summary
A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
10 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 16:48 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
D-Link DIR-822A Affected: A_101
    cpe:2.3:h:d-link:dir-822a:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
tian (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-86140 (GCVE-0-2026-86140)

Vulnerability from cvelistv5 – Published: 2026-09-05 04:26 – Updated: 2026-09-08 18:06
VLAI
Summary
In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat stack-based buffer overflow.
Severity
8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:06 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
xmlsoft libxml2 Affected: 0 , < 2.15.4 (semver)
    cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-85509 (GCVE-0-2026-85509)

Vulnerability from cvelistv5 – Published: 2026-09-04 04:21 – Updated: 2026-09-04 18:16
VLAI
Summary
FreeIPMI before 1.6.19 has a stack-based buffer overflow in _read_fru_data in libfreeipmi/fru/ipmi-fru.c when a BMC returns more bytes than requested.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:16 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeIPMI FreeIPMI Affected: 0 , < 1.6.19 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-85508 (GCVE-0-2026-85508)

Vulnerability from cvelistv5 – Published: 2026-09-04 04:20 – Updated: 2026-09-04 16:38
VLAI
Summary
ipmi-oem in FreeIPMI before 1.6.19 has a stack-based buffer overflow in _output_dell_system_info_cmc_ipv6_info in ipmi-oem/ipmi-oem-dell.c (cmc-ipv6-info subcommand to dell get-system-info).
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 16:37 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeIPMI FreeIPMI Affected: 0 , < 1.6.19 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-85507 (GCVE-0-2026-85507)

Vulnerability from cvelistv5 – Published: 2026-09-04 04:18 – Updated: 2026-09-04 04:18
VLAI
Summary
ipmi-oem in FreeIPMI before 1.6.19 has a stack-based buffer overflow in _output_dell_system_info_cmc_info in ipmi-oem/ipmi-oem-dell.c (cmc-info subcommand to dell get-system-info).
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeIPMI FreeIPMI Affected: 0 , < 1.6.19 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-85506 (GCVE-0-2026-85506)

Vulnerability from cvelistv5 – Published: 2026-09-04 04:17 – Updated: 2026-09-04 04:17
VLAI
Summary
ipmi-oem in FreeIPMI before 1.6.19 has a stack-based buffer overflow in _get_dell_system_info_idrac_info in ipmi-oem/ipmi-oem-dell.c (idrac-info subcommand to dell get-system-info).
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeIPMI FreeIPMI Affected: 0 , < 1.6.19 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-85504 (GCVE-0-2026-85504)

Vulnerability from cvelistv5 – Published: 2026-09-04 04:14 – Updated: 2026-09-04 19:22
VLAI
Summary
FreeIPMI before 1.6.19 has a stack-based buffer overflow in _ipmi_sel_oem_fujitsu_get_sel_entry_long_text in libfreeipmi/sel/ipmi-sel-string-fujitsu-irmc-common.c via malformed Fujitsu SEL long-text responses.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:22 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeIPMI FreeIPMI Affected: 0 , < 1.6.19 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
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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.

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