CVE-2025-34158
HIGHDescription
Plex Media Server (PMS) 1.41.7.x through 1.42.0.x before 1.42.1 is affected by incorrect resource transfer between spheres because /myplex/account provides the credentials of the server owner (and a /api/resources call reveals other servers accessible by that server owner).
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 41% of all known CVEs.
References
- https://forums.plex.tv/t/plex-media-server-security-update/928341
- https://github.com/lufinkey/vulnerability-research/blob/main/CVE-2025-34158/README.md
- https://github.com/lufinkey/vulnerability-research/tree/main/CVE-2025-34158
- https://www.bleepingcomputer.com/news/security/plex-warns-users-to-patch-security-vulnerability-immediately/
- https://www.plex.tv/media-server-downloads/
- https://www.runzero.com/blog/plex/
- https://www.tenable.com/plugins/nessus/250294
- https://www.vulncheck.com/advisories/plex-media-server-unspecified
Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-02.