Actively exploited in the wild

Plex Media Server Remote Code Execution Vulnerability

Plex - Media Server · Listed in the CISA KEV since 2023-03-10. This indicates confirmed attacks in production environments.

Required action: Apply updates per vendor instructions.

CVE-2020-5741

HighCVSS 7.2KEV

Published: 08/05/2020(UTC)Updated: 17/06/2026(UTC)Translated: 18/09/2026(UTC)NVD NIST

Summary

Deserialization of Untrusted Data in Plex Media Server on Windows allows a remote, authenticated attacker to execute arbitrary Python code.

Risk Assessment

An authenticated attacker can remotely execute arbitrary Python code on the server, potentially leading to system compromise and access to sensitive data.

Recommendation

Update Plex Media Server to the latest version that includes the fix for this vulnerability, and restrict access to the server to trusted users only.

Other vulnerabilities in Plex Media Server

CVE-2014-9304High
Plex Media Server before version 0.9.9.3 allows remote attackers to bypass the web server whitelist, conduct SSRF attacks, and execute arbitrary administrative actions via multiple crafted X-Plex-Url headers to system/proxy, which are inconsistently processed by the request handler in the backend web server.

Original NVD description (English source)

Deserialization of Untrusted Data in Plex Media Server on Windows allows a remote, authenticated attacker to execute arbitrary Python code.