CVE-2025-34158

critical

Description

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.

References

https://www.helpnetsecurity.com/2025/08/27/plex-media-server-cve-2025-34158-attack/

https://www.vulncheck.com/advisories/plex-media-server-unspecified

https://www.tenable.com/plugins/nessus/250294

https://www.runzero.com/blog/plex/

https://www.plex.tv/media-server-downloads/

https://www.bleepingcomputer.com/news/security/plex-warns-users-to-patch-security-vulnerability-immediately/

https://github.com/lufinkey/vulnerability-research/tree/main/CVE-2025-34158

https://forums.plex.tv/t/plex-media-server-security-update/928341

Details

Source: Mitre, NVD

Published: 2025-08-21

Updated: 2025-08-28

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 8.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Severity: High

CVSS v4

Base Score: 10

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Severity: Critical

EPSS

EPSS: 0.00102