AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-43413

HIGH · CVSS 8.8 EPSS 1.91% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-07 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. 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.

Detected Signals
exploit

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

CVE
CVE-2021-43413
Severity
HIGH
CVSS
8.8
EPSS
1.91%

Original NVD Description

An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. This can be trivially exploited to get full root access.

Related CVEs

Other vulnerabilities affecting the same vendor(s)