Cisco Unified Communications Products Hardening Release: October 2026 - Improper Access Control 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-2026-76478 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.
CVE-2026-76478
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-76478
Cisco Emergency Responder
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Cisco Unified Communications Manager
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Cisco Unified Communications Manager IM and Presence Service
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Cisco Unity Connection
Source reference: /containers/cna/affected/3/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Cisco",
"product": "Cisco Emergency Responder",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "14SU3a"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "15SU1a"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15SU3"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unified Communications Manager",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "14SU4a"
},
{
"status": "affected",
"version": "15SU1a"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15.0.1.13010-1"
},
{
"status": "affected",
"version": "15.0.1.13011-1"
},
{
"status": "affected",
"version": "15.0.1.13012-1"
},
{
"status": "affected",
"version": "15.0.1.13013-1"
},
{
"status": "affected",
"version": "15.0.1.13014-1"
},
{
"status": "affected",
"version": "15.0.1.13015-1"
},
{
"status": "affected",
"version": "15.0.1.13016-1"
},
{
"status": "affected",
"version": "15.0.1.13017-1"
},
{
"status": "affected",
"version": "15SU3a"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "15SU4a"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unified Communications Manager IM and Presence Service",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU2a"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15SU3"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unity Connection",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "14SU3a"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15SU3"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-76478
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #52515 · Revision 1
- Added to Heist Feed
- Publisher date