CVE-2026-76474: Cisco Unified Communications Products Hardening Release: October 2026 - Improper Authentication 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-2026-76474 are related to issues concerning improper authentication that are grouped under the Common Weakness Enumeration (CWE) Class CWE-287.
Affected Software
Event History
Frequently Asked Questions
Which systems are in scope for this issue?
The issue applies to Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager, Cisco Unified Communications Manager IM & Presence Service, Cisco Unified Communications Manager Session Management Edition, and Cisco Unity Connection.
Does exploitation require credentials, user interaction, or local access?
No. The supplied CVSS vector indicates network access, low attack complexity, no privileges required, and no user interaction.
What is the potential impact of successful exploitation?
The supplied CVSS vector rates confidentiality, integrity, and availability impact as high, with scope unchanged.
Is this a single vulnerability or a hardening release addressing multiple issues?
The description states that this CVE tracks multiple internally discovered improper-authentication vulnerabilities addressed through software hardening releases.