CVE-2026-76478

HIGH 8.8

Cisco Unified Communications Products Hardening Release: October 2026 - Improper Access Control Vulnerabilities

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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-2026-76478 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

CWE	CWE-284
Vendor	cisco
Product	cisco emergency responder
Ecosystems	Networking
Industries	NetworkingTelecommunications
Published	Oct 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Cisco / Cisco Emergency Responder

14 14SU1 14SU2 14SU3 14SU3a 15 15SU1 15SU1a 14SU4 15SU2 15SU3 14SU5 15SU4 14SU6

Cisco / Cisco Unified Communications Manager

14 14SU1 14SU2 14SU3 15 15SU1 14SU4 14SU4a 15SU1a 15SU2 15.0.1.13010-1 15.0.1.13011-1 15.0.1.13012-1 15.0.1.13013-1 15.0.1.13014-1 15.0.1.13015-1 15.0.1.13016-1 15.0.1.13017-1 15SU3a 14SU5 15SU4 15SU4a 14SU6

Cisco / Cisco Unified Communications Manager IM and Presence Service

14 14SU1 14SU2 14SU2a 14SU3 15 15SU1 14SU4 15SU2 15SU3 14SU5 15SU4 14SU6

Cisco / Cisco Unity Connection

14 14SU1 14SU2 14SU3 14SU3a 15 15SU1 14SU4 15SU2 15SU3 14SU5 15SU4 14SU6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

sec.cloudapps.cisco.com: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-hardening-twgbH9e3