CVE-2025-64325CRITICAL 9.0EPSS p28.5%

CVE-2025-64325CVE-2025-64325

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.

Scoring

CVSS 3.19.0 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS0.37% probability of exploitation · percentile 28.5% · 2026-06-18T12:00:27Z
Published2025-11-18
Last modified2026-01-15

Underlying weaknesses· 2

CWE-79CWE-116

References

  1. https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x
  2. https://github.com/EmbySupport/Emby.Security/security/advisories/GHSA-2gwc-988r-2r7x

2

TypeTargetConfidenceTier
WeaknessImproper Encoding or Escaping of Outputcwe-1160%live
WeaknessImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-790%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.