How severe is CVE-2025-64325?

CVE-2025-64325 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-64325 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-64325?

CVE-2025-64325 affects Emby. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-64325?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-64325 have an EU (EUVD) identifier?

Yes. CVE-2025-64325 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198099.

When was CVE-2025-64325 published?

CVE-2025-64325 was published on 2025-11-18 and last updated on 2026-06-17.

CVE-2025-64325

CVE-2025-64325 is a critical-severity vulnerability in Emby with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
CVSS v4: 8.4
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198099
Weakness: CWE-79
Affected product: Emby
Published: 2025-11-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-64325?: 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.
How severe is CVE-2025-64325?: CVE-2025-64325 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-64325 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-64325?: CVE-2025-64325 affects Emby. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-64325?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-64325 have an EU (EUVD) identifier?: Yes. CVE-2025-64325 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198099.
When was CVE-2025-64325 published?: CVE-2025-64325 was published on 2025-11-18 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:emby:emby:*:*:*:*:*:*:*:*

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