Key Findings CVE-2026-20230 affects Cisco Unified CM with a CVSS score of 8.6, elevated to Critical severity by vendor Unauthenticated remote attackers can exploit an SSRF flaw to write unauthorized files and potentially gain root access Public proof-of-concept exploit code is already available Vulnerability requires WebDialer service to be enabled, which is disabled by default Fixed releases available: version 14SU6 for Release 14 and 15SU5 for Release 15 No complete workaro
