CVE-2026-57915

FAUCET Score

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.

First published: Jun 26, 2026Last modified: Jun 26, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
Apache Software Foundation	Apache Kerby	>= 0, < 2.1.2CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

3.9

Impact Score

3.4

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.32%

Probability of exploitation in next 30 days

EPSS Percentile

24.5%

Percentile rank of EPSS score among Peer Group

As of 2026-07-26

Model: v2026.06.15

This CVE's current EPSS score of 0.0032 is in the 6th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

apachevendor investigatingvia vendor_rss

View patch

Vendor Advisories (1)

apacheapache:www.mail-archive.com/[email protected]/msg11312.html

CVE-2026-57915: Apache Kerby: Kerberos Pre-Authentication Bypass

Jun 26, 2026

References

access.redhat.com / security/cve/CVE-2026-57915

bugzilla.redhat.com / show_bug.cgi

security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-57915.json

openwall.com / lists/oss-security/2026/06/26/8

lists.apache.org / thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh