What is CVE-2025-34158?

CVE-2025-34158 is a high-severity vulnerability in Plex Media Server, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 8.5/10. Published 2025-08-21.

How severe is CVE-2025-34158?

High severity. CVSS v3 base score is 8.5 out of 10.

Is CVE-2025-34158 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Plex Media Server

CVE-2025-34158

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 server…

EPSS: 0.005 (42.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Plex Media Server — versions 1.41.7.x

Weakness classification (CWE)

CWE-669 — Incorrect Resource Transfer Between Spheres

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-34158?: CVE-2025-34158 is a high-severity vulnerability in Plex Media Server, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 8.5/10. Published 2025-08-21.
How severe is CVE-2025-34158?: High severity. CVSS v3 base score is 8.5 out of 10.
Is CVE-2025-34158 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.