Cisco said these vulnerabilities affect Cisco IP Phones running a SIP software release prior to 11.0 for Wireless IP Phone 8821-EX and release 12.5 SR1 for the IP Conference Phone 8832 and the ...

The IP Phone 8800 series running Session Initiation Protocol (SIP) Software prior to version 11.0(5) (for Wireless IP Phone 8821-EX), or version 12.5(1)SR1 (for the IP Conference Phone 8832 and ...

Collectively, the 8800 series includes six desk phone models (the 8811, 8841, 8845, 8851, 8861, and 8865), the IP conference phone 8832, and the 8821 and 8821-EX handsets for in campus mobile workers.

Cisco is warning of multiple critical remote code execution zero-days in the web-based management interface of the end-of-life Small Business SPA 300 and SPA 500 series IP phones.