CVE-2011-0091

MediumCVSS 6.4/10Last modified Jun 16, 2026

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."

Metrics

CVSS 2.0 6.4/10AV:N/AC:L/Au:N/C:P/I:P/A:N

Weakness enumeration

CWE-287

Affected software

No affected versions have been published.

Timeline

Published
Feb 10, 2011
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2011-0091: Medium severity, CVSS 6.4 | Vulnix