CVE-2009-0632: Cisco Unified Communications Manager

High severity, CVSS 9.0. EPSS: 3% chance of exploitation in the next 30 days.

The IP Phone Personal Address Book (PAB) Synchronizer feature in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.1, 4.2 before 4.2(3)SR4b, 4.3 before 4.3(2)SR1b, 5.x before 5.1(3e), 6.x before 6.1(3), and 7.0 before 7.0(2) sends privileged directory-service account credentials to the client in cleartext, which allows remote attackers to modify the CUCM configuration and perform other privileged actions by intercepting these credentials, and then using them in requests unrelated to the intended synchronization task, as demonstrated by (1) DC Directory account credentials in CUCM 4.x and (2) TabSyncSysUser account credentials in CUCM 5.x through 7.x.

Affected products

• Cisco Unified Communications Manager: version 4.1 only; version 4.2 only; version 4.2(3)sr1 only; version 4.2(3)sr2b only; version 4.2(3)sr3 only; version 4.2(3)sr4 only; …

Published 2009-03-12. Last modified 2026-06-16.