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Vulnerability Intelligence Report
Cisco Unified Communications Products Hardening Release: October 2026 - Cross-site Scripting Vulnerabilities

CVE-2026-76475

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection have conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76475 are related to issues concerning improper neutralization of input during web page generation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-79.

Cross-Site Scripting (XSS) No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
Exploitability:2.9
Impact Score:5.8
EPSS Probability:0.25%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—

Weaknesses (CWE)

CWE-79 ↗Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products & Versions

Vendor Product Affected Versions
Cisco Cisco Emergency Responder 14 (affected), 14SU1 (affected), 14SU2 (affected), 14SU3 (affected), 14SU3a (affected), 15 (affected), 15SU1 (affected), 15SU1a (affected), 14SU4 (affected), 15SU2 (affected), 15SU3 (affected), 14SU5 (affected), 15SU4 (affected), 14SU6 (affected)
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)
Cisco Cisco Unified Communications Manager IM and Presence Service 14 (affected), 14SU1 (affected), 14SU2 (affected), 14SU2a (affected), 14SU3 (affected), 15 (affected), 15SU1 (affected), 14SU4 (affected), 15SU2 (affected), 15SU3 (affected), 14SU5 (affected), 15SU4 (affected), 14SU6 (affected)
Cisco Cisco Unity Connection 14 (affected), 14SU1 (affected), 14SU2 (affected), 14SU3 (affected), 14SU3a (affected), 15 (affected), 15SU1 (affected), 14SU4 (affected), 15SU2 (affected), 15SU3 (affected), 14SU5 (affected), 15SU4 (affected), 14SU6 (affected)

References & Technical Advisories

NVD Listing ↗ MITRE Listing ↗ GitHub Advisory ↗
No reference links found.

Threat Intelligence Signals

EPSS Score
0.250%
GitHub Advisory
GHSA-g6jg-jfw2-23p4 ↗
Vulnerability Class
Cross-Site Scripting (XSS)

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityCisco Systems, Inc. · Hosted Service · USA
Reserved2026-08-19T12:02:03
Published2026-10-21T16:14:55
Last Updated2026-10-22T13:37:54

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