CVE-2026-96656
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.
Early warning: exploitation observed
- Exploitation observed since Oct 18, 2026
- Not yet in the official CISA catalogue
- First attack observed 24 days after disclosure
Source: VulnCheck KEV · Oct 18, 2026
CVSS score7.2 / 10
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HWeakness type (CWE)CWE-73
Vendorsplex
Affected products
| Vendors | Product | Versions |
|---|---|---|
| plex | media server | < 1.43.0.10861 |
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This product uses the NVD API but is not endorsed or certified by the NVD.