CVE-2026-108132

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Double Free in Windows Kerberos Elevates Privileges

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-108132

EUVD

EUVD-2026-100451

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-415	The product calls free() twice on the same memory address.

Attack-Flow Graph

Executive Summary

This vulnerability is a double free issue in the Windows Kerberos authentication system. A double free occurs when a program frees a block of memory twice, which can lead to memory corruption and potentially allow an attacker to execute arbitrary code or elevate privileges.

Detection Guidance

Detection of this vulnerability requires monitoring for unusual Kerberos-related crashes or memory corruption events on affected Windows systems. Check Windows Event Logs for Kerberos errors or application crashes. Use tools like Windows Defender ATP or Microsoft Sentinel for behavioral analysis. Apply Microsoft's official patches as soon as available.

Impact Analysis

An authorized attacker could exploit this to gain higher privileges on your system, allowing them to perform actions they normally would not be permitted to do. This could include installing programs, viewing or deleting data, or creating new accounts with full user rights.

Compliance Impact

This vulnerability allows local privilege escalation via a double free in Windows Kerberos. Such attacks could enable unauthorized access to sensitive data or systems, potentially violating compliance requirements for data protection and access control in standards like GDPR and HIPAA.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Kerberos double free vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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