Cisco has fixed CVE-2026-20230 in Unified Communications Manager, a server-side request forgery flaw that can let an unauthenticated attacker write arbitrary files and potentially escalate to root. Proof-of-concept code is already public, and affected systems running Cisco WebDialer are urged to patch or disable the service immediately. #CVE-2026-20230 #CiscoUnifiedCommunicationsManager #WebDialer
Keypoints
- Cisco patched CVE-2026-20230 in Unified Communications Manager and Session Management Edition.
- The flaw is a server-side request forgery that can enable arbitrary file writes.
- Attackers could use the file write to escalate privileges to root.
- The issue only works when Cisco WebDialer is running, and it is off by default.
- Proof-of-concept exploit code is public, so patching or disabling WebDialer is urgent.
Read More: https://thehackernews.com/2026/06/cisco-patches-cve-2026-20230-in-unified.html