Cisco Unified Communications Products Hardening Release: October 2026 - Improper Access Control Vulnerabilities

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-76478
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-21 17:19:07 UTC
Updated2026-10-21 18:54:37 UTC
DescriptionAs 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-2026-76478 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem Types: CWE-284 | CWE-284 Improper Access Control

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSSV3_18.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco Emergency Responder affected 14 Not specified
CNA Cisco Cisco Emergency Responder affected 14SU1 Not specified
CNA Cisco Cisco Emergency Responder affected 14SU2 Not specified
CNA Cisco Cisco Emergency Responder affected 14SU3 Not specified
CNA Cisco Cisco Emergency Responder affected 14SU3a Not specified
CNA Cisco Cisco Emergency Responder affected 15 Not specified
CNA Cisco Cisco Emergency Responder affected 15SU1 Not specified
CNA Cisco Cisco Emergency Responder affected 15SU1a Not specified
CNA Cisco Cisco Emergency Responder affected 14SU4 Not specified
CNA Cisco Cisco Emergency Responder affected 15SU2 Not specified
CNA Cisco Cisco Emergency Responder affected 15SU3 Not specified
CNA Cisco Cisco Emergency Responder affected 14SU5 Not specified
CNA Cisco Cisco Emergency Responder affected 15SU4 Not specified
CNA Cisco Cisco Emergency Responder affected 14SU6 Not specified
CNA Cisco Cisco Unified Communications Manager affected 14 Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU2 Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU3 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15SU1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU4 Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU4a Not specified
CNA Cisco Cisco Unified Communications Manager affected 15SU1a Not specified
CNA Cisco Cisco Unified Communications Manager affected 15SU2 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13010-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13011-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13012-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13013-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13014-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13015-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13016-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15.0.1.13017-1 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15SU3a Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU5 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15SU4 Not specified
CNA Cisco Cisco Unified Communications Manager affected 15SU4a Not specified
CNA Cisco Cisco Unified Communications Manager affected 14SU6 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU1 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU2 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU2a Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU3 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 15 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 15SU1 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU4 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 15SU2 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 15SU3 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU5 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 15SU4 Not specified
CNA Cisco Cisco Unified Communications Manager IM And Presence Service affected 14SU6 Not specified
CNA Cisco Cisco Unity Connection affected 14 Not specified
CNA Cisco Cisco Unity Connection affected 14SU1 Not specified
CNA Cisco Cisco Unity Connection affected 14SU2 Not specified
CNA Cisco Cisco Unity Connection affected 14SU3 Not specified
CNA Cisco Cisco Unity Connection affected 14SU3a Not specified
CNA Cisco Cisco Unity Connection affected 15 Not specified
CNA Cisco Cisco Unity Connection affected 15SU1 Not specified
CNA Cisco Cisco Unity Connection affected 14SU4 Not specified
CNA Cisco Cisco Unity Connection affected 15SU2 Not specified
CNA Cisco Cisco Unity Connection affected 15SU3 Not specified
CNA Cisco Cisco Unity Connection affected 14SU5 Not specified
CNA Cisco Cisco Unity Connection affected 15SU4 Not specified
CNA Cisco Cisco Unity Connection affected 14SU6 Not specified

References

ReferenceSourceLinkTags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-... [email protected] sec.cloudapps.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Exploits

CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

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