CVE-2020-37121CWE-121

CVE-2020-37121

Medium · published February 5, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
14.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00238 · 14.1th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-02-05T22:16Z
References (4)
https://nutcrackerssecurity.github.io/posts/windows-exploit-dev-part-7/ · [email protected]https://sourceforge.net/projects/codeblocks/ · [email protected]https://www.codeblocks.org/ · [email protected]https://www.vulncheck.com/advisories/codeblocks-buffer-overflow-seh-unicode · [email protected]
EPSS history
Timeline
  • 05 FEB 16:13Z
    CODE::BLOCKS 16.01 - Buffer Overflow (SEH) UNICODE
    cvelistv5