CVE-2026-57915

Apache Kerby: Kerberos Pre-Authentication Bypass

State: Published
Severity: 7.3 High
Published: Jun 26, 2026
Updated: Aug 3, 2026
Reserved: Jun 26, 2026

Description

It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	CISA-ADP
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	redhat-SADP

Weaknesses

CWE-304 Missing Critical Step in Authentication
CWE-358 Improperly Implemented Security Check for Standard

Affected Products

Product	Versions
Apache KerbyApache Software Foundation	before 2.1.2Affected

References

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