High severity8.8NVD Advisory· Published Oct 21, 2026· Updated Oct 21, 2026

CVE-2026-76478

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Cisco Unified Communications Manager Session Management Editionllm-fuzzy
Cisco Systems, Inc./Unified Communications Manager Im \& Presence Servicellm-fuzzy
Cisco Systems, Inc./Unity Connectionllm-fuzzy
Cisco Systems, Inc./Emergency Responderllm-fuzzy
Cisco Systems, Inc./Prime Collaboration Deploymentllm-fuzzy
Cisco Systems, Inc./Unified Communications Managerllm-fuzzy

Patches

Vulnerability mechanics

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-hardening-twgbH9e3nvd

News mentions

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