Four chained flaws give unauthenticated code execution on a Plex Media Server. The fix shipped on 3 August and the attacks began seventy-five days later, which tells you the patch was never the variable.
1 article — 2026-10-20
IN CISA KEV — ADDED 2026-10-20
Authoritative record
Root Notes reports on this identifier; it does not maintain it. For the vendor advisory, the affected versions and the scoring, NVD and MITRE hold the primary records.
CISA added this identifier to its Known Exploited Vulnerabilities catalog on 2026-10-20, which means the agency has evidence of exploitation rather than a judgement that exploitation is possible. US federal agencies were required to remediate it by 2026-11-03.
Four chained flaws give unauthenticated code execution on a Plex Media Server. The fix shipped on 3 August and the attacks began seventy-five days later, which tells you the patch was never the variable.