# CVE-2026-76419: Cisco Unified Communications Manager Cross-Site Scripting Vulnerability

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface.

This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Cisco / Cisco Unified Communications Manager: 14 (affected); 14SU1 (affected); 14SU2 (affected); 14SU3 (affected); 15 (affected); 15SU1 (affected); 14SU4 (affected); 14SU4a (affected); 15SU1a (affected); 15SU2 (affected); 15.0.1.13010-1 (affected); 15.0.1.13011-1 (affected); 15.0.1.13012-1 (affected); 15.0.1.13013-1 (affected); 15.0.1.13014-1 (affected); 15.0.1.13015-1 (affected); 15.0.1.13016-1 (affected); 15.0.1.13017-1 (affected); 15SU3a (affected); 14SU5 (affected); 15SU4 (affected); 15SU4a (affected); 14SU6 (affected). Source: CNA: cisco

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: cisco

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: NVD: psirt@cisco.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-5mQn2U5z (CNA: cisco)

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-5mQn2U5z (psirt@cisco.com)

## Provenance

- CNA: cisco: https://www.cve.org/CVERecord?id=CVE-2026-76419; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76419; retrieved 2026-11-04; source updated 2026-11-04

Revision: dda22d3d93f423ea7b7f534f1393d9e45f4fd6a40b501c7ca05620e964721d01

Canonical: https://y2.dev/cve/CVE-2026-76419

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