CISA Adds Actively Exploited Linux Root Access Bug CVE-2026-31431 to KEV

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a security vulnerability affecting multiple Linux distributions to its Known Exploited Vulnerabilities catalog on Friday, following evidence of active exploitation. CVE-2026-31431, rated 7.8 on the CVSS scale, is a local privilege escalation flaw that could enable unauthorized root access.