CVE record · CVE-2026-20055

Cisco Packaged Contact Center Enterprise & Cisco Unified Contact Center Enterprise Cross-Site Scripting Vulnerability

CVSS 4.8 MediumEPSS 0.0021 · 10th percentile

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 Packaged Contact Center Enterprise	affected 12.5(1) affected 11.0(1) affected 12.0(1) affected 11.0(2) affected 11.5(1) affected 10.5(1) affected 10.5(2) affected 11.6(2) affected 10.5(1)_ES7 affected 11.6(1) affected 10.5(2)_ES8 affected 12.6(1) and 3 more Other versions: unknown
Cisco	Cisco Unified Contact Center Enterprise	affected 12.6(1)ES3 affected 12.6(1)ES1 affected 12.6(1) affected 12.6(1)ES2 affected 12.6(1)SecurityPatch affected 12.5(1)ES1 affected 12.5(1) affected 12.6(1)ES4 affected 11.0(1) affected 10.5(1) affected 12.0(1) affected 10.5 and 10 more Other versions: unknown

Identifiers: CVE-2026-20055
CNA: cisco
Weakness (CWE): CWE-79
Tags: Cisco Packaged Contact Center Enterprise
Cisco Unified Contact Center Enterprise
Cross-site scripting (XSS)
Published: 21 Jan 2026
Updated: 21 Jan 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
4.8	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N	CNA (cisco)

CISA KEV Not listed.
EPSS 0.0021, the 10th percentile, on 6 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-ucce-pcce-xss-2JVyg3uD

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.