CVE-2026-57915

Summary

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.

Affected Software

Weaknesses

• CWE-304: CWE-304 Missing Critical Step in Authentication

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/06/26/8

Apache Kerby: org.apache.kerby/kerb-server: Apache Kerby: Kerberos pre-authentication bypass via unrecognized PA-DATA

Additional References

• https://access.redhat.com/security/cve/CVE-2026-57915
• https://bugzilla.redhat.com/show_bug.cgi?id=2493407
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json

References

• https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh

• ←Previous
• Next→