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Cisco Unified Communications Manager Cross-Site Scripting Vulnerability

Medium 1 CVE Published Nov 4, 2026 at 4:00 PM UTC

Summary

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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

There are no workarounds that address this vulnerability.

Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.

Fixed Releases

At the time of publication, the release information in the following table was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.

The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability that is described in this advisory and which release included the fix for this vulnerability.

Cisco Unified CM and Unified CM SME Release

First Fixed Release

14

Migrate to a fixed release.

15

15SU5

Note: This fix is also included as part of the broader hardening improvements that are disclosed in the security advisory Cisco Unified Communications Products Security Hardening Release: October 2026.

The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

CVEs in this advisory 1

Updates

  1. Published by Cisco

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.