CVE-2026-76478 vulnerability in Cisco Products
Published on October 21, 2026
Cisco Unified Communications Products Hardening Release: October 2026 - Improper Access Control Vulnerabilities
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.
Vulnerability Analysis
CVE-2026-76478 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2026-76478 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2026-76478
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Affected Versions
Cisco Emergency Responder:- Version 14 is affected.
- Version 14SU1 is affected.
- Version 14SU2 is affected.
- Version 14SU3 is affected.
- Version 14SU3a is affected.
- Version 15 is affected.
- Version 15SU1 is affected.
- Version 15SU1a is affected.
- Version 14SU4 is affected.
- Version 15SU2 is affected.
- Version 15SU3 is affected.
- Version 14SU5 is affected.
- Version 15SU4 is affected.
- Version 14SU6 is affected.
- Version 14 is affected.
- Version 14SU1 is affected.
- Version 14SU2 is affected.
- Version 14SU3 is affected.
- Version 15 is affected.
- Version 15SU1 is affected.
- Version 14SU4 is affected.
- Version 14SU4a is affected.
- Version 15SU1a is affected.
- Version 15SU2 is affected.
- Version 15.0.1.13010-1 is affected.
- Version 15.0.1.13011-1 is affected.
- Version 15.0.1.13012-1 is affected.
- Version 15.0.1.13013-1 is affected.
- Version 15.0.1.13014-1 is affected.
- Version 15.0.1.13015-1 is affected.
- Version 15.0.1.13016-1 is affected.
- Version 15.0.1.13017-1 is affected.
- Version 15SU3a is affected.
- Version 14SU5 is affected.
- Version 15SU4 is affected.
- Version 15SU4a is affected.
- Version 14SU6 is affected.
- Version 14 is affected.
- Version 14SU1 is affected.
- Version 14SU2 is affected.
- Version 14SU2a is affected.
- Version 14SU3 is affected.
- Version 15 is affected.
- Version 15SU1 is affected.
- Version 14SU4 is affected.
- Version 15SU2 is affected.
- Version 15SU3 is affected.
- Version 14SU5 is affected.
- Version 15SU4 is affected.
- Version 14SU6 is affected.
- Version 14 is affected.
- Version 14SU1 is affected.
- Version 14SU2 is affected.
- Version 14SU3 is affected.
- Version 14SU3a is affected.
- Version 15 is affected.
- Version 15SU1 is affected.
- Version 14SU4 is affected.
- Version 15SU2 is affected.
- Version 15SU3 is affected.
- Version 14SU5 is affected.
- Version 15SU4 is affected.
- Version 14SU6 is affected.