CVE-2020-37121

medium

Description

CODE::BLOCKS 16.01 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler with crafted Unicode characters. Attackers can create a malicious text file with 1982 bytes of buffer and shellcode to trigger remote code execution.

References

https://www.vulncheck.com/advisories/codeblocks-buffer-overflow-seh-unicode

https://www.codeblocks.org/

https://sourceforge.net/projects/codeblocks/

https://nutcrackerssecurity.github.io/posts/windows-exploit-dev-part-7/

Details

Source: Mitre, NVD

Published: 2026-02-05

Updated: 2026-08-06

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 6.7

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00063