What is CVE-2025-20358?

CVE-2025-20358 is a critical-severity vulnerability in Cisco Unified Contact Center Express, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2025-11-05.

How severe is CVE-2025-20358?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Auth bypass in Cisco Unified Contact Center Express

CVE-2025-20358

A vulnerability in the Contact Center Express (CCX) Editor application of Cisco Unified CCX could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative permissions pertaining to script creation and ex…

Vulnerability class: Broken Authentication

EPSS: 0.007 (72.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.

Affected products

Cisco Unified Contact Center Express — versions 10.5(1)SU1, 10.6(1), 11.6(1)

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

cisco-sa-cc-unauth-rce-QeN8h7mQ

Frequently asked questions

What is CVE-2025-20358?: CVE-2025-20358 is a critical-severity vulnerability in Cisco Unified Contact Center Express, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2025-11-05.
How severe is CVE-2025-20358?: Critical severity. CVSS v3 base score is 9.4 out of 10.