AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-3631

MEDIUM · CVSS 6.3 EPSS 0.49% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-03-02 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

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-2021-3631
Severity
MEDIUM
CVSS
6.3
EPSS
0.49%
Linux

Original NVD Description

A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.