What is CVE-2026-20055?

CVE-2026-20055 is a medium-severity vulnerability in Cisco Packaged Contact Center Enterprise, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-01-21.

How severe is CVE-2026-20055?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Cisco Packaged Contact Center Enterprise

CVE-2026-20055

Multiple vulnerabilities in the web-based management interface of Cisco Packaged Contact Center Enterprise (Packaged CCE) and Cisco Unified Contact Center Enterprise (Unified CCE) could allow an authenticated, remote attacker to conduct a…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (19.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cisco Packaged Contact Center Enterprise — versions 12.5(1), 11.0(1), 12.0(1)
Cisco Unified Contact Center Enterprise — versions 12.6(1)ES3, 12.6(1)ES1, 12.6(1)

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cisco-sa-ucce-pcce-xss-2JVyg3uD

Frequently asked questions

What is CVE-2026-20055?: CVE-2026-20055 is a medium-severity vulnerability in Cisco Packaged Contact Center Enterprise, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-01-21.
How severe is CVE-2026-20055?: Medium severity. CVSS v3 base score is 4.8 out of 10.