CVE-2019-1716: Cisco IP Conference Phone 7800 Firmware

Critical severity, CVSS 9.8. EPSS: 3.1% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code. The vulnerability exists because the software improperly validates user-supplied input during user authentication. An attacker could exploit this vulnerability by connecting to an affected device using HTTP and supplying malicious user credentials. A successful exploit could allow the attacker to trigger a reload of an affected device, resulting in a DoS condition, or to execute arbitrary code with the privileges of the app user. Cisco fixed this vulnerability in the following SIP Software releases: 10.3(1)SR5 and later for Cisco Unified IP Conference Phone 8831; 11.0(4)SR3 and later for Cisco Wireless IP Phone 8821 and 8821-EX; and 12.5(1)SR1 and later for the rest of the Cisco IP Phone 7800 Series and 8800 Series.

Affected products

• Cisco IP Conference Phone 7800 Firmware: before 12.5\(1\)sr1 (fixed in 12.5\(1\)sr1)
• Cisco IP Phone 8800 Firmware: before 12.5\(1\)sr1 (fixed in 12.5\(1\)sr1)
• Cisco IP Phone 8821-Ex Firmware: before 11.0\(4\)sr3 (fixed in 11.0\(4\)sr3)
• Cisco IP Phone 8821 Firmware: before 11.0\(4\)sr3 (fixed in 11.0\(4\)sr3)
• Cisco Unified IP Conferenece Phone 8831 Firmware: before 10.3\(1\)sr5 (fixed in 10.3\(1\)sr5)

Published 2019-03-22. Last modified 2026-06-17.