CVE-2011-0040
MEDIUMEPSS 97th pctlDescription
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."
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 97% of all known CVEs.
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
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-005
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64915
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12485
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.