Is It On KEV?

Plex Media Server

YES - ON THE CISA KEV LIST
CVE-2026-96656

Plex Media Server External Control of File Name or Path Vulnerability

CISA catalog due date2026-10-23
19 days past due
EPSS exploit probability (next 30 days)1.8% · 79percentile
From CVE publication to KEV listing27 days (2026-09-23 → 2026-10-20)
Remediation window (KEV listing to due date)3 days
Days on the KEV list22 days
Date added to KEV2026-10-20
Known ransomware campaign useUnknown
VendorPlex
ProductMedia Server
Weaknesses (CWE)CWE-73

Plex: 5 entries (0.3% of all KEV entries are from this vendor); 4 added in 2026.

BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.

Your BOD 26-04 window (SSVC tier helper)

Your remediation window ends:

Description

Plex Media Server contains an external control of file name or path vulnerability which can allow an admin user to write arbitrary files that may be executed on load. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96654, and CVE-2026-96655.

Required action (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes

https://forums.plex.tv/t/important-security-update-for-plex-media-server-v1-43-2-and-earlier/942319 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-96656

References

Other KEV entries for this vendor: Plex

Plex - Vendors with KEV entries

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