How severe is CVE-2025-23369?

CVE-2025-23369 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-23369 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-23369?

CVE-2025-23369 affects Github Enterprise Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-23369?

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

Does CVE-2025-23369 have an EU (EUVD) identifier?

Yes. CVE-2025-23369 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3159.

When was CVE-2025-23369 published?

CVE-2025-23369 was published on 2025-01-21 and last updated on 2026-06-17.

CVE-2025-23369

CVE-2025-23369 is a high-severity vulnerability in Github Enterprise Server with a CVSS 3.x base score of 8.8. 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-347.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.6
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-3159
Weakness: CWE-347
Affected product: Github Enterprise Server
Published: 2025-01-21
Last modified: 2026-06-17

Description

An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.

Frequently asked questions

What is CVE-2025-23369?: An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.
How severe is CVE-2025-23369?: CVE-2025-23369 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-23369 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-23369?: CVE-2025-23369 affects Github Enterprise Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-23369?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-23369 have an EU (EUVD) identifier?: Yes. CVE-2025-23369 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3159.
When was CVE-2025-23369 published?: CVE-2025-23369 was published on 2025-01-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*

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