Cisco Unified CM CVE-2026-20230: SSRF to Root PoC

🔴 Critical | Source: The Hacker News Cisco has patched a server-side request forgery (SSRF) vulnerability in Unified Communications Manager (Unified CM) that allows an unauthenticated network attacker to write arbitrary files to the system and escalate privileges to root. The flaw is tracked as CVE-2026-20230 and public proof-of-concept exploit code is already available, significantly lowering the barrier to exploitation. Cisco’s PSIRT has not confirmed active exploitation in the wild, but the availability of working PoC code makes patching urgent. ...

4 June 2026 Â· ZX Cloud Security