High · published September 23, 2026
CVSS calls it high at 7.2. It is confirmed in active exploitation. It sits in the 56.6th percentile for exploit probability.
Plex Media Server before 1.43.3.10861 allows an admin user to write arbitrary files that may be executed on load. The preference TranscoderH264Options is appended verbatim to x264's option string on every transcode. At startup, all .so files are run without signature, execute bit, or symbol checks.
| Product | Versions | Fixed in |
|---|---|---|
| plex/media_server | < 1.43.3.10861 | 1.43.3.10861 |