What is CVE-2026-20059?

CVE-2026-20059 is a medium-severity vulnerability in Cisco Unity Connection, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-15.

How severe is CVE-2026-20059?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Cisco Unity Connection

CVE-2026-20059

A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected XSS attack against a user of the interface. This vulnerability exists because the web…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (15.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cisco Unity Connection — versions 14, 14SU1, 14SU2
Cisco Unity_connection — versions 14.0, 14su1, 14su2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cisco-sa-unity-vulns-n2EJSbbw (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20059?: CVE-2026-20059 is a medium-severity vulnerability in Cisco Unity Connection, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-15.
How severe is CVE-2026-20059?: Medium severity. CVSS v3 base score is 6.1 out of 10.