CVE-2026-95503

6.8 MEDIUM 0.2% exploit odds No fix listed Crypto Server

What it is

A flaw was found in the Kerberos federation provider of Keycloak, an open-source identity and access management solution. When Kerberos password authentication is used without SPNEGO, the system fails to verify the identity of the Key Distribution Center (KDC) by requesting a server ticket. This allows an attacker on the same network to spoof the KDC and bypass the authentication process, potentially gaining unauthorized access to user accounts.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. High risk of data exposure, data tampering.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-22 08:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-22 19:37 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-22 08:16 UTC
Last modified: 2026-09-22 19:37 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-347
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 6.8

Attack vector: Adjacent network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

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References

NVD record · CVE.org record