Unrated severityNVD Advisory· Published Feb 10, 2011· Updated Jun 16, 2026
CVE-2011-0091
CVE-2011-0091
Description
Kerberos in Microsoft Windows Server 2008 R2 and Windows 7 does not prevent a session from changing from strong encryption to DES encryption, which allows man-in-the-middle attackers to spoof network traffic and obtain sensitive information via a DES downgrade, aka "Kerberos Spoofing Vulnerability."
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:*+ 2 more
- cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:r2:*:x64:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
9- osvdb.org/70835nvd
- secunia.com/advisories/43257nvd
- support.avaya.com/css/P8/documents/100127250nvd
- www.securityfocus.com/bid/46140nvd
- www.securitytracker.com/idnvd
- www.vupen.com/english/advisories/2011/0326nvd
- docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-013nvd
- exchange.xforce.ibmcloud.com/vulnerabilities/64901nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12498nvd
News mentions
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