CVE-2026-42903
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Null pointer dereference in Windows Kerberos

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Null pointer dereference in Windows Kerberos allows an authorized attacker to deny service over a network.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-42903
EUVD
EUVD-2026-35592
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_kerberos *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability is a null pointer dereference in the Windows Kerberos component. It allows an authorized attacker to cause a denial of service over a network.

Impact Analysis

The impact of this vulnerability is a denial of service (DoS) condition. An authorized attacker can exploit this flaw to disrupt the availability of services that rely on Windows Kerberos authentication.

Compliance Impact

The provided information does not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

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