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).

5505 vulnerabilities reference this CWE, most recent first.

CVE-2026-78010 (GCVE-0-2026-78010)

Vulnerability from cvelistv5 – Published: 2026-08-27 23:24 – Updated: 2026-08-28 16:53
VLAI
Title
Fireware OS Stack-Based Buffer Overflow in iked Allows Unauthenticated Denial of Service
Summary
A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process iallows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:53 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
WatchGuard Fireware OS Affected: 2025.0 , < 2026.2.2 (custom)
Affected: 12.0 , < 12.12.2 (custom)
Create a notification for this product.
WatchGuard Fireware OS Affected: 12.0 , < 12.5.20 (custom)
Create a notification for this product.
Credits
Discovered Internally by WatchGuard AI Security Research
Show details on NVD website
To clipboard 

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CVE-2026-77946 (GCVE-0-2026-77946)

Vulnerability from cvelistv5 – Published: 2026-08-22 11:00 – Updated: 2026-08-26 17:48
VLAI
Title
TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based overflow
Summary
A vulnerability was determined in TRENDnet TEW-821DAP 2.2.01b05. Affected by this vulnerability is the function uci_safe_get of the file /cgi-bin/apply_time.cgi of the component NTP Timezone Configuration Handler. Executing a manipulation of the argument system.ntp.server/system.ntp.enable_server/cameo.time.time_zone/cameo.cameo.syslog_server can lead to stack-based buffer overflow. The attack may be launched 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 2026-08-26 17:48 UTC
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/394175 vdb-entrytechnical-description
https://vuldb.com/vuln/394175/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-77946 third-party-advisory
https://vuldb.com/submit/881252 third-party-advisory
https://github.com/dxz0069/WAVLINK-WN530H4-Comman… exploit
Impacted products
Vendor Product Version
TRENDnet TEW-821DAP Affected: 2.2.01b05
    cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
ST4R0002 (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-77658 (GCVE-0-2026-77658)

Vulnerability from cvelistv5 – Published: 2026-08-26 12:10 – Updated: 2026-08-26 13:11
VLAI
Title
Dia: dia: stack buffer overflow in bus object via unvalidated handle count in project files
Summary
A stack-based buffer overflow vulnerability exists in the Dia diagram editor when processing Network Bus objects from Dia XML project files. In objects/network/bus.c, bus_load() reads the number of bus handles from the file attribute "bus_handles" using attribute_num_data() without validating an upper bound: bus->num_handles = attribute_num_data(attr); When a bus handle is subsequently moved, bus_handle_moved() allocates two temporary arrays on the stack: parallel = (real *)g_alloca(num_handles * sizeof(real)); perp = (real *)g_alloca(num_handles * sizeof(real)); Because num_handles is fully attacker-controlled via the project file, sufficiently large values (for example 262144 or higher) cause g_alloca() to consume more stack space than the default thread stack limit (typically 8 MB on Linux), resulting in stack overflow, SIGSEGV, and potential stack frame / return-address corruption. An attacker can embed a Bus object with an excessive bus_handles count in a malicious .dia file. Exploitation requires the victim to open the file in Dia (file dialog, command line, or file association) and trigger handle manipulation (moving a bus handle), which exercises the vulnerable code path. The identical g_alloca pattern is present in objects/Misc/tree.c (copied from bus.c) and is likely vulnerable to the same class of attack via Tree objects. Affected versions: Dia 0.98.0 and earlier versions containing this code; issue confirmed on upstream master as of 2026-08-21. Upstream report: https://gitlab.gnome.org/GNOME/dia/-/issues/581
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 13:09 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
GNOME Dia Affected: 0 , ≤ 0.98.0 (semver)
Create a notification for this product.
Date Public
2026-08-21 00:00
Credits
Red Hat would like to thank Robin "drzobin" Larsson for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-77218 (GCVE-0-2026-77218)

Vulnerability from cvelistv5 – Published: 2026-08-28 15:34 – Updated: 2026-08-28 20:19
VLAI
Title
PLANET GS-4210-16P2S Stack Buffer Overflow via dispatcher.cgi Credential Handlers
Summary
PLANET GS-4210-16P2S firmware before 3.441b260626 contains authenticated stack buffer overflow vulnerabilities in /cgi-bin/dispatcher.cgi. The web_login_first_post handler copies the usrPass POST parameter into a fixed-size stack buffer without length validation, the web_sys_enablePasswd_post handler copies the enbPass POST parameter into a fixed-size stack buffer without length validation, and the web_sys_localUser_post handler copies the usrName and usrPass POST parameters into fixed-size stack buffers without length validation. A remote authenticated attacker can send a crafted request to crash the CGI process or web management service, resulting in denial of service.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 20:19 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
PLANET Technology Corp. PLANET GS-4210-16P2S Affected: 0 , < 3.441b260626 (custom)
Create a notification for this product.
Date Public
2026-08-27 00:00
Credits
Jincheng Wang (@winmt) Professor Le Yu of Nanjing University of Posts and Telecommunications Professor Xiapu Luo of The Hong Kong Polytechnic University
Show details on NVD website
To clipboard 

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CVE-2026-77217 (GCVE-0-2026-77217)

Vulnerability from cvelistv5 – Published: 2026-08-28 15:34 – Updated: 2026-08-31 18:55
VLAI
Title
PLANET GS-4210-16P2S Stack Buffer Overflow and NULL Pointer Dereference via dispatcher.cgi RADIUS Handlers
Summary
PLANET GS-4210-16P2S firmware before 3.441b260626 contains authenticated stack buffer overflow and null pointer dereference vulnerabilities in /cgi-bin/dispatcher.cgi. The web_radiusSrv*_post family of handlers copies the radKey, radKey_0, radDftParamKey, radName, and radIp POST parameters into fixed-size stack buffers without length validation, and additionally dereferences radName and radIp without verifying their presence in the request. A remote authenticated attacker can send crafted requests to crash the CGI process or web management service, resulting in denial of service.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:23 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
PLANET Technology Corp. PLANET GS-4210-16P2S Affected: 0 , < 3.441b260626 (custom)
Create a notification for this product.
Date Public
2026-08-27 00:00
Credits
Jincheng Wang (@winmt) Professor Le Yu of Nanjing University of Posts and Telecommunications Professor Xiapu Luo of The Hong Kong Polytechnic University
Show details on NVD website
To clipboard 

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CVE-2026-77148 (GCVE-0-2026-77148)

Vulnerability from cvelistv5 – Published: 2026-08-20 18:15 – Updated: 2026-08-20 19:46
VLAI
Title
Comfast CF-N1-S Web Management mbox-config sub_44B50C stack-based overflow
Summary
A vulnerability was found in Comfast CF-N1-S 2.6.0.1. This impacts the function sub_44B50C of the file /cgi-bin/mbox-config?method=SET&section=ptest_channel of the component Web Management. The manipulation results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.9 (Critical)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 19:46 UTC
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/393733 vdb-entrytechnical-description
https://vuldb.com/vuln/393733/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-77148 third-party-advisory
https://vuldb.com/submit/880910 third-party-advisory
https://github.com/AdminSafe/CVE/issues/7 exploitissue-tracking
Impacted products
Vendor Product Version
Comfast CF-N1-S Affected: 2.6.0.1
    cpe:2.3:a:comfast:cf-n1-s:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
010hex (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-77022 (GCVE-0-2026-77022)

Vulnerability from cvelistv5 – Published: 2026-08-20 16:45 – Updated: 2026-08-21 21:47
VLAI
Title
Comfast CF-N1-S SSID Configuration mbox-config sub_44B438 stack-based overflow
Summary
A security flaw has been discovered in Comfast CF-N1-S 2.6.0.1. Affected by this issue is the function sub_44B438 of the file /cgi-bin/mbox-config?method=SET&section=ptest_ssid of the component SSID Configuration. The manipulation of the argument ssid results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.9 (Critical)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 21:39 UTC
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/393637 vdb-entrytechnical-description
https://vuldb.com/vuln/393637/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-77022 third-party-advisory
https://vuldb.com/submit/880599 third-party-advisory
https://github.com/AdminSafe/CVE/issues/5 exploitissue-tracking
Impacted products
Vendor Product Version
Comfast CF-N1-S Affected: 2.6.0.1
    cpe:2.3:a:comfast:cf-n1-s:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
010hex (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-76879 (GCVE-0-2026-76879)

Vulnerability from cvelistv5 – Published: 2026-08-19 22:44 – Updated: 2026-08-20 15:26
VLAI
Title
Stack-based Buffer Overflow in Wireshark
Summary
C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:08 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.8 (semver)
Affected: 4.4.0 , < 4.4.18 (semver)
Create a notification for this product.
Credits
Aisle Research (Dmitrijs Trizna, Luigino Camastra, Ze Sheng (O2Lab & TAMU), Igor Morgenstern)
Show details on NVD website
To clipboard 

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CVE-2026-76590 (GCVE-0-2026-76590)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:45 – Updated: 2026-08-21 16:47
VLAI
Title
TRENDnet TEW-755AP ssi wan.cgi stack-based overflow
Summary
A vulnerability was identified in TRENDnet TEW-755AP up to 20260702. Affected by this issue is some unknown functionality of the file /cgi-bin/wan.cgi of the component ssi. Such manipulation of the argument cameo.wan.wan_pppoe_password_00 leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.9 (Critical)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 16:47 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
TRENDnet TEW-755AP Affected: 20260702
    cpe:2.3:o:trendnet:tew-755ap_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
fuhanhan2015 (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-76589 (GCVE-0-2026-76589)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:30 – Updated: 2026-08-25 14:18
VLAI
Title
TRENDnet TEW-755AP mycli FUN_401000 stack-based overflow
Summary
A vulnerability was found in TRENDnet TEW-755AP up to 20260702. Affected is the function FUN_401000 of the file /sbin/mycli. The manipulation of the argument ssid results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.9 (Critical)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:18 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
TRENDnet TEW-755AP Affected: 20260702
    cpe:2.3:o:trendnet:tew-755ap_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
fuhanhan2015 (VulDB User)
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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