VULNERABILITY INTELLIGENCE
CVE-2010-4020
CVSS score6.3 MEDIUM
EPSS probability1.92%
CISA KEVNot currently listed
Published2010-12-02
Last modified2026-06-16
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Description
MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.