Threat Investigation
Request a demo

CVE-2025-64325

Critical

Description

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.

SeverityCritical
CVSS9.0
Exploit probability—
ProductEmby
PublishedNov 18, 2025
First seenNov 18, 2025
Weakness typeCWE-79Cross-site scripting (XSS)CWE-116CWE-116

How to fix

Update
  • emby emby4.8.1.0 or later

Affected products

ProductAffected versionsFixed in
emby embyv < 4.8.1.04.8.1.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.