CVE-2026-76474
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Improper Authentication in Cisco Unified Communications Manager
Vulnerability report for CVE-2026-76474, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-21
Last updated on: 2026-10-21
Assigner: Cisco Systems, Inc.
Description
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-2026-76474 are related to issues concerning improper authentication that are grouped under the Common Weakness Enumeration (CWE) Class CWE-287.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Cisco | Cisco | Emergency Responder 14 |
| Cisco | Cisco | Emergency Responder 14SU1 |
| Cisco | Cisco | Emergency Responder 14SU2 |
| Cisco | Cisco | Emergency Responder 14SU3 |
| Cisco | Cisco | Emergency Responder 14SU3a |
| Cisco | Cisco | Emergency Responder 15 |
| Cisco | Cisco | Emergency Responder 15SU1 |
| Cisco | Cisco | Emergency Responder 15SU1a |
| Cisco | Cisco | Emergency Responder 14SU4 |
| Cisco | Cisco | Emergency Responder 15SU2 |
| Cisco | Cisco | Emergency Responder 15SU3 |
| Cisco | Cisco | Emergency Responder 14SU5 |
| Cisco | Cisco | Emergency Responder 15SU4 |
| Cisco | Cisco | Emergency Responder 14SU6 |
| Cisco | Cisco | Unified Communications Manager 14 |
| Cisco | Cisco | Unified Communications Manager 14SU1 |
| Cisco | Cisco | Unified Communications Manager 14SU2 |
| Cisco | Cisco | Unified Communications Manager 14SU3 |
| Cisco | Cisco | Unified Communications Manager 15 |
| Cisco | Cisco | Unified Communications Manager 15SU1 |
| Cisco | Cisco | Unified Communications Manager 14SU4 |
| Cisco | Cisco | Unified Communications Manager 14SU4a |
| Cisco | Cisco | Unified Communications Manager 15SU1a |
| Cisco | Cisco | Unified Communications Manager 15SU2 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13010-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13011-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13012-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13013-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13014-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13015-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13016-1 |
| Cisco | Cisco | Unified Communications Manager 15.0.1.13017-1 |
| Cisco | Cisco | Unified Communications Manager 15SU3a |
| Cisco | Cisco | Unified Communications Manager 14SU5 |
| Cisco | Cisco | Unified Communications Manager 15SU4 |
| Cisco | Cisco | Unified Communications Manager 15SU4a |
| Cisco | Cisco | Unified Communications Manager 14SU6 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU1 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU2 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU2a |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU3 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 15 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 15SU1 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU4 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 15SU2 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 15SU3 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU5 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 15SU4 |
| Cisco | Cisco | Unified Communications Manager IM and Presence Service 14SU6 |
| Cisco | Cisco | Unity Connection 14 |
| Cisco | Cisco | Unity Connection 14SU1 |
| Cisco | Cisco | Unity Connection 14SU2 |
| Cisco | Cisco | Unity Connection 14SU3 |
| Cisco | Cisco | Unity Connection 14SU3a |
| Cisco | Cisco | Unity Connection 15 |
| Cisco | Cisco | Unity Connection 15SU1 |
| Cisco | Cisco | Unity Connection 14SU4 |
| Cisco | Cisco | Unity Connection 15SU2 |
| Cisco | Cisco | Unity Connection 15SU3 |
| Cisco | Cisco | Unity Connection 14SU5 |
| Cisco | Cisco | Unity Connection 15SU4 |
| Cisco | Cisco | Unity Connection 14SU6 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-287 | When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. |
