CVE-2026-95503

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.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-95503
https://bugzilla.redhat.com/show_bug.cgi?id=2537744

Configurations

No configuration.

History

22 Sep 2026, 08:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-22 08:16

Updated : 2026-09-22 19:37

NVD link : CVE-2026-95503

Mitre link : CVE-2026-95503

CVE.ORG link : CVE-2026-95503

JSON object : View

Products Affected

No product.

CWE

CWE-347

Improper Verification of Cryptographic Signature

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