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Case File

CVE-2021-40647

MEDIUM · CVSS 5.5 EPSS 0.32% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-09-09 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-40647
Severity
MEDIUM
CVSS
5.5
EPSS
0.32%

Original NVD Description

In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn't aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.

Related CVEs

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