What’s Vulnerable › Products

Cisco Session Initiation Protocol (SIP) Software vulnerabilities

1 known vulnerabilities, 0 confirmed exploited in the wild (CISA KEV), 1 published in the last 12 months.

Check whether your Cisco Session Initiation Protocol (SIP) Software version is affected

Latest Cisco Session Initiation Protocol (SIP) Software vulnerabilities

• CVE-2026-20281 — Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service Vulnerability (CVSS 7.5)