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).

5279 vulnerabilities reference this CWE, most recent first.

CVE-2020-37142 (GCVE-0-2020-37142)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-03-05 01:28
VLAI
Title
10-Strike Network Inventory Explorer 8.54 - 'Add' Local Buffer Overflow (SEH)
Summary
10-Strike Network Inventory Explorer 8.54 contains a structured exception handler buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting SEH records. Attackers can craft a malicious payload targeting the 'Computer' parameter during the 'Add' function to trigger remote code execution.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-03-24 00:00
Credits
Felipe Winsnes
Show details on NVD website
To clipboard 

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CVE-2020-37138 (GCVE-0-2020-37138)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-03-05 01:28
VLAI
Title
10-Strike Network Inventory Explorer 9.03 - 'Read from File' Buffer Overflow (SEH)(ROP)
Summary
10-Strike Network Inventory Explorer 9.03 contains a buffer overflow vulnerability in the file import functionality that allows remote attackers to execute arbitrary code. Attackers can craft a malicious text file with carefully constructed payload to trigger a stack-based buffer overflow and bypass data execution prevention through a ROP chain.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-03-30 00:00
Credits
Hodorsec
Show details on NVD website
To clipboard 

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CVE-2020-37136 (GCVE-0-2020-37136)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-07-15 01:24
VLAI
Title
ZOC Terminal v7.25.5 - 'Private key file' Denial of Service
Summary
ZOC Terminal 7.25.5 contains a denial of service vulnerability in the private key file input field that allows attackers to crash the application. Attackers can overwrite the private key file input with a 2000-byte buffer, causing the application to become unresponsive when attempting to create SSH key files.
Severity
6.7 (Medium)
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
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
EmTec ZOC Terminal Affected: 7.25.5
Create a notification for this product.
Date Public
2020-04-05 00:00
Credits
chuyreds
Show details on NVD website
To clipboard 

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CVE-2020-37133 (GCVE-0-2020-37133)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 18:44
VLAI
Title
UltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service
Summary
UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allows attackers to crash the application. Attackers can paste an overly long string of 300 characters into the Repeater Host property to trigger an application crash.
Severity
6.7 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-04-05 00:00
Credits
chuyreds
Show details on NVD website
To clipboard 

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CVE-2020-37132 (GCVE-0-2020-37132)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 18:44
VLAI
Title
UltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service
Summary
UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. Attackers can paste an overly long 300-character string into the password field to trigger an application crash and prevent normal launcher functionality.
Severity
6.7 (Medium)
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
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-04-05 00:00
Credits
chuyreds
Show details on NVD website
To clipboard 

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CVE-2020-37128 (GCVE-0-2020-37128)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-07-15 01:24
VLAI
Title
ZOC Terminal 7.25.5 - 'Script' Denial of Service
Summary
ZOC Terminal 7.25.5 contains a script processing vulnerability that allows local attackers to crash the application by loading a maliciously crafted REXX script file. Attackers can generate an oversized script with 20,000 repeated characters to trigger an application crash and cause a denial of service.
Severity
6.7 (Medium)
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
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
EmTec ZOC Terminal Affected: 7.25.5
Create a notification for this product.
Date Public
2020-04-05 00:00
Credits
chuyreds
Show details on NVD website
To clipboard 

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CVE-2020-37127 (GCVE-0-2020-37127)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 21:18
VLAI
Title
dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service
Summary
Dnsmasq-utils 2.79-1 contains a buffer overflow vulnerability in the dhcp_release utility that allows attackers to cause a denial of service by supplying excessive input. Attackers can trigger a core dump and terminate the dhcp_release process by sending a crafted input string longer than 16 characters.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-04-06 00:00
Credits
Josue Encinar
Show details on NVD website
To clipboard 

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CVE-2020-37126 (GCVE-0-2020-37126)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 21:18
VLAI
Title
Free Desktop Clock x86 Venetian Blinds Zipper 3.0 - Unicode Stack Overflow (SEH)
Summary
Free Desktop Clock 3.0 contains a stack overflow vulnerability in the Time Zones display name input that allows attackers to overwrite Structured Exception Handler (SEH) registers. Attackers can exploit the vulnerability by crafting a malicious Unicode input that triggers an access violation and potentially execute arbitrary code.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-04-11 00:00
Credits
Bobby Cooke
Show details on NVD website
To clipboard 

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CVE-2020-37124 (GCVE-0-2020-37124)

Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-06 20:34
VLAI
Title
B64dec 1.1.2 - Buffer Overflow (SEH Overflow + Egg Hunter)
Summary
B64dec 1.1.2 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) with crafted input. Attackers can leverage an egg hunter technique and carefully constructed payload to inject and execute malicious code during base64 decoding process.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
4Mhz B64dec Affected: 1.1.2
Create a notification for this product.
Date Public
2020-04-13 00:00
Credits
Andy Bowden
Show details on NVD website
To clipboard 

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CVE-2020-37122 (GCVE-0-2020-37122)

Vulnerability from cvelistv5 – Published: 2026-02-06 23:14 – Updated: 2026-04-07 14:05
VLAI
Title
SpotFTP-FTP Password Recover 2.4.8 - Denial of Service
Summary
SpotFTP-FTP Password Recover 2.4.8 contains a denial of service vulnerability that allows attackers to crash the application by generating a large buffer overflow. Attackers can create a text file with 1000 'Z' characters and input it as a registration code to trigger the application crash.
Severity
6.7 (Medium)
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
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Date Public
2020-02-25 00:00
Credits
Ismael Nava
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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