CVE-2007-5855: Apple Mac OS X

Medium severity, CVSS 6.4. EPSS: 1.9% chance of exploitation in the next 30 days.

Mail in Apple Mac OS X 10.4.11 and 10.5.1, when an SMTP account has been set up using Account Assistant, can use plaintext authentication even when MD5 Challenge-Response authentication is available, which makes it easier for remote attackers to sniff account activity.

Affected products

• Apple Mac OS X: version 10.4.11 only; version 10.5.1 only

Published 2007-12-19. Last modified 2026-06-16.