CVE-2009-4212

CriticalCVSS 10.0/10Last modified Jun 16, 2026

Description

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.

Metrics

CVSS 2.0 10.0/10AV:N/AC:L/Au:N/C:C/I:C/A:C

Weakness enumeration

CWE-189

Affected software

No affected versions have been published.

Timeline

Published
Jan 13, 2010
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2009-4212: Critical severity, CVSS 10.0 | Vulnix