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Cisco patches critical Unified CM flaw that could grant root access via SSRF

1 min read
Source: BleepingComputer
Cisco patches critical Unified CM flaw that could grant root access via SSRF
Photo: BleepingComputer
TL;DR

Cisco released security updates for a critical flaw in Unified CM (CVE-2026-20230) that can be exploited remotely through SSRF to write files and escalate to root. A public PoC exists, but there is no evidence of active exploitation yet. The vulnerability affects systems with WebDialer enabled (WebDialer is disabled by default); admins are urged to upgrade to 14SU6 or 15SU5 or disable WebDialer as a temporary measure until patches are applied.

Topics:technologysecurity#cisco-unified-cm#cve-2026-20230#root-access#security#ssrf#webdialer
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  1. Cisco warns of critical Unified CM flaw with PoC exploit code  BleepingComputer
  2. Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public  The Hacker News
  3. Cisco Warns of Available PoC for Critical Unified CM Vulnerability  SecurityWeek
  4. PoC Exploit Released for Cisco Unified Communications Manager Security Vulnerability  gbhackers.com
  5. Critical Cisco Unified CM Bug Patched as Public Exploit Code Emerges  Security Affairs

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