CVE-2025-34158

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.5% of scored records. A rank, not a probability.

NVD base score

8.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-08-21 13:43Z1 YR AGO

Last updated

2026-01-02 15:56Z8 MO AGO

Reserved

2025-04-15

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.5)

CNA CVSS vector

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

Weaknesses

• CWE-669Incorrect Resource Transfer Between SpheresClass

Data version

5.2

Document digest

64432800fc7477006ca9dc643b9078ea5fcc2e172b8092de794367fe14825f63

• www.plex.tvhttps://www.plex.tv/media-server-downloads/
• forums.plex.tvhttps://forums.plex.tv/t/plex-media-server-security-update/928341
• www.bleepingcomputer.comhttps://www.bleepingcomputer.com/news/security/plex-warns-users-to-patch-security-vulnerability-immediately/
• www.runzero.comhttps://www.runzero.com/blog/plex/
• www.tenable.comhttps://www.tenable.com/plugins/nessus/250294
• www.vulncheck.comhttps://www.vulncheck.com/advisories/plex-media-server-unspecified
• github.comhttps://github.com/lufinkey/vulnerability-research/tree/main/CVE-2025-34158
• github.comhttps://github.com/lufinkey/vulnerability-research/blob/main/CVE-2025-34158/README.md