CVE-2026-76474
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Improper Authentication in Cisco Unified Communications Manager

Publication date: 2026-10-21

Last updated on: 2026-11-07

Assigner: Cisco Systems, Inc.

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.

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Meta Information

Published
2026-10-21
Last Modified
2026-11-07
Generated
2026-11-10
AI Q&A
2026-10-22
EPSS Evaluated
2026-11-09
NVD
CVE-2026-76474
EUVD
EUVD-2026-107386

Affected Vendors & Products

Showing 63 associated CPEs
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
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KEV
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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.

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Executive Summary

CVE-2026-76474 is a vulnerability related to improper authentication in Cisco products, classified under CWE-287. It affects multiple Cisco systems including Emergency Responder, Unified Communications Manager, IM & Presence Service, Session Management Edition, and Unity Connection.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for identifying this vulnerability on a network or system. Cisco's advisory may contain guidance, but it is not included in the given context.

Impact Analysis

This vulnerability could allow unauthorized access to affected Cisco systems due to improper authentication. Attackers might exploit it to gain control over communications infrastructure, leading to data breaches, service disruptions, or unauthorized modifications.

Mitigation Strategies

Immediate mitigation involves applying the software hardening releases provided by Cisco for the affected products. Check the Cisco Security Advisory for the fixed versions and upgrade your systems accordingly.

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