VULNERABILITY INTELLIGENCE
CVE-2010-4021
CVSS score2.1 LOW
EPSS probability2.09%
CISA KEVNot currently listed
Published2010-12-02
Last modified2026-06-16
CVSS vectorAV:N/AC:H/Au:S/C:N/I:P/A:N
Description
The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."