CVE-2025-64325: Emby

Critical severity, CVSS 9.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Emby Server is a personal media server. Prior to version 4.8.1.0 and prior to Beta version 4.9.0.0-beta, a malicious user can send an authentication request with a manipulated X-Emby-Client value, which gets added to the devices section of the admin dashboard without sanitization. This issue has been patched in version 4.8.1.0 and Beta version 4.9.0.0-beta.

Affected products

• Emby Emby: before 4.8.1.0 (fixed in 4.8.1.0)

Published 2025-11-18. Last modified 2026-06-17.