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CVE-2026-20230

CRITICAL Export PDF

Cisco Unified Communications Manager Vulnerability

Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root.

CVSS Score
9.8
CRITICAL
Published
25 Jun 2026 00:00
Modified
N/A
Vendor
Cisco
Product
Unified Communications Manager
Source
CIRCL

Affected Versions

Fix Vendor Patch / Mitigation Available

Weaknesses (CWE)

CWE-918

Affected Systems

Cisco
Unified Communications Manager
Cisco
Secure Firewall Adaptive Security Appliance (ASA) And Secure Firewall Threat Defense (FTD)
Secure Firewall Management Center (FMC)
IOS
Unified Communications Manager
Catalyst SD-WAN Manager
Catalyst SD-WAN
Catalyst SD-WAN Manger

KEV Status

Known Exploited Vulnerability