CVE record · CVE-2026-20045

Cisco Unified Communications Products Remote Code Execution Vulnerability

CVSS 8.2 HighCriticalIn CISA KEVEPSS 0.045 · 91st percentile

Critical, because:

In CISA’s KEV catalogue since 21 Jan 2026: it is known to be exploited.

Published by the CVE Program (CNA: cisco) at 21 Jan 2026, 16:26 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Cisco	Cisco Unified Communications Manager	affected 12.5(1)SU2 affected 12.5(1)SU1 affected 12.5(1) affected 12.5(1)SU3 affected 12.5(1)SU4 affected 14 affected 12.5(1)SU5 affected 14SU1 affected 12.5(1)SU6 affected 14SU2 affected 12.5(1)SU7 affected 12.5(1)SU7a and 19 more Other versions: unknown
Cisco	Cisco Unified Communications Manager IM and Presence Service	affected 12.5(1) affected 12.5(1)SU1 affected 12.5(1)SU2 affected 12.5(1)SU3 affected 12.5(1)SU4 affected 14 affected 12.5(1)SU5 affected 14SU1 affected 12.5(1)SU6 affected 14SU2 affected 14SU2a affected 12.5(1)SU7 and 8 more Other versions: unknown
Cisco	Cisco Unity Connection	affected 12.5(1) affected 12.5(1)SU1 affected 12.5(1)SU2 affected 12.5(1)SU3 affected 12.5(1)SU4 affected 14 affected 12.5(1)SU5 affected 14SU1 affected 12.5(1)SU6 affected 14SU2 affected 12.5(1)SU7 affected 14SU3 and 9 more Other versions: unknown

Identifiers: CVE-2026-20045
CNA: cisco
Weakness (CWE): CWE-94
Tags: Cisco Unified Communications Manager
Cisco Unified Communications Manager IM and Presence Service
Cisco Unity Connection
Code injection
Published: 21 Jan 2026
Updated: 26 Feb 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.2	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N	CNA (cisco)

CISA KEV Listed since 21 Jan 2026: known to be exploited.
EPSS 0.045, the 91st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 21 Jan 2026. New records show when each source confirmed them.

Sources

References from the CNA

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.