PT-2026-47893 · Microsoft · Windows Kerberos+1

Published 2026-06-09 · Updated 2026-06-10 · CVE-2026-42914

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Kerberos (affected versions not specified)

Description A denial of service issue exists within the Windows Kerberos authentication protocol, which could lead to authentication failures and prevent users from logging into the system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-42914

Affected Products

Windows

Windows Kerberos

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-42914 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42914 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42914 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42914 · Vendor Advisory
• https://twitter.com/windowsforum/status/2064537374202183903 · Twitter Post