cvedb.io
CVE-2021-42835
HIGH · CVSS 7
EPSS exploitation probability: 0%
Published 2021-12-08T15:15:10.180 · Last modified 2026-06-17T04:10:10.880

Summary

An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM).

Affected products

plex — media_server

Does this affect you?

Add your gear to cvedb and we'll alert you only when plex ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.