CRITICALVulnerability
Global

Cisco Unified CM Flaw Exploited After PoC Reveals File-Write Path to Root

·Source: The Hacker News

Updated:

Executive Summary

Threat actors have begun to exploit a recently disclosed critical security flaw impacting Cisco Unified Communications Manager (Unified CM) and Unified Communications Manager Session Management Edition (Unified CM SME). The vulnerability, tracked as CVE-2026-20230 (CVSS score: 8.6), is a case of improper input validation for specific HTTP requests that could allow an unauthenticated, remote

Analysis

Threat actors have begun to exploit a recently disclosed critical security flaw impacting Cisco Unified Communications Manager (Unified CM) and Unified Communications Manager Session Management Edition (Unified CM SME). The vulnerability, tracked as CVE-2026-20230 (CVSS score: 8.6), is a case of improper input validation for specific HTTP requests that could allow an unauthenticated, remote

Indicators of Compromise (1)

CVE (1)
CVE-2026-20230
NVDMITRE CVE
Source Attribution

Originally published by The Hacker News on Jun 24, 2026.

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