CVE-2011-0040

MediumCVSS 5.0/10Last modified Jun 16, 2026

Description

The server in Microsoft Active Directory on Windows Server 2003 SP2 does not properly handle an update request for a service principal name (SPN), which allows remote attackers to cause a denial of service (authentication downgrade or outage) via a crafted request that triggers name collisions, aka "Active Directory SPN Validation Vulnerability."

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Feb 9, 2011
Last modified: Jun 16, 2026
NVD status: Modified

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