Live › vulnerability › CVE-2026-76476
Go to dashboardCisco's October 2026 hardening release for Unified CM, IM&P, SME, Unity Connection, Emergency Responder and Prime Collaboration Deployment fixes a group of improper input validation (CWE-20) flaws. The 8.8 score is the worst single flaw in the group: network-reachable, low complexity, needs a low-privilege account, high impact on confidentiality, integrity and availability. Cisco found them internally, says they are not exploited, and offers no workarounds. Affected regardless of configuration.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Cisco Unified Communications Manager | vendor | 14, 15 < 15SU5 | 15SU5 |
| Cisco Unity Connection | vendor | 14, 15 < 15SU5 | 15SU5 |
| Cisco Unified CM IM&P | vendor | 14, 15 < 15SU5 | 15SU5 |
| Cisco Unified CM SME | vendor | 14, 15 < 15SU5 | 15SU5 |
| Cisco Emergency Responder | vendor | 14, 15 < 15SU5 | 15SU5 |
| Cisco Prime Collaboration Deployment | vendor | 14, 15 < 15SU5 | 15SU5 |
show version active)Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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-2026-76476 are related to issues concerning improper input validation that are grouped under the Common Weakness Enumeration (CWE) Class CWE-20.
This page as .md · .json · in your agent: get_signal("CVE-2026-76476")
NVD data is provided by NIST and is public domain · EPSS scores by FIRST, used with attribution. Posts quoted belong to their authors.