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CVE-2026-57915
Apache Kerby: Kerberos Pre-Authentication Bypass
High7.3EPSS 0.53%
- Published
- Updated
- Reserved
- Assigned by
- apache
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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| redhat-SADPADP (enrichment) | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Deferred | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.53% · top 55% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Weakness
Affected products
Apache Software Foundation · Apache Kerby
- affected < 2.1.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.kerby:kerb-serverGHSA-262p-fj3f-xh7v (opens in a new tab)
References (5)
- https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh (opens in a new tab)vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/06/26/8 (opens in a new tab)
- https://access.redhat.com/security/cve/CVE-2026-57915 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2493407 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json (opens in a new tab)x_sadp-csaf-vex
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-262p-fj3f-xh7v (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-57915)Record last updated .