CVE-2011-0040

no score yetEPSS 23%

microsoft windows 2003 server: no CVSS score yet. EPSS 23% chance of exploitation in the next 30 days.

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."

EPSS: 23% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2011-02-09
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

microsoft:windows_2003_server

References

http://osvdb.org/70825
http://secunia.com/advisories/43215
http://www.securityfocus.com/bid/46145
http://www.securitytracker.com/id?1025042
http://www.vupen.com/english/advisories/2011/0319

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