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CVE-2026-20045: Cisco Unified Communications Products Code Injection Vulnerability

Cisco Unified Communications Manager · in CISA KEV since 2026-01-21

2026-01-21added to KEV

2026-02-11federal remediation due date

4.54%EPSS exploit probability (30 days) 91.1th percentile

9.8 CRITICALCVSS 3.1

Unknownknown ransomware use

0days from NVD publication to KEV

What it is

Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance contain a code injection vulnerability that could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CWE	CWE-94
CVSS vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD published	2026-01-21 (Analyzed)

Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-20045.json · all KEV CVEs

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