CVE-2026-76473: Cisco Unified Communications Products Hardening Release: October 2026 - Improper control of a resource through its lifetime.
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-2026-76473 are related to issues concerning improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Class CWE-74.
Affected Software
Event History
Frequently Asked Questions
Which products are in scope?
The affected product families named in the advisory are Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager, Unified Communications Manager IM & Presence Service, Unified Communications Manager Session Management Edition, and Cisco Unity Connection.
Does exploitation require authentication or user interaction?
The supplied CVSS vector indicates that exploitation is network-accessible, has low attack complexity, requires no privileges, and requires no user interaction.
What security impact is indicated?
The CVSS vector indicates high impacts to confidentiality, integrity, and availability, with an unchanged scope.