CVE-2005-2181: Cisco IP Phone 7940 Firmware

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

Cisco 7940/7960 Voice over IP (VoIP) phones do not properly check the Call-ID, branch, and tag values in a NOTIFY message to verify a subscription, which allows remote attackers to spoof messages such as the "Messages waiting" message.

Affected products

• Cisco IP Phone 7940 Firmware: affected versions not specified
• Cisco IP Phone 7960 Firmware: affected versions not specified

Published 2005-07-11. Last modified 2026-06-16.