CVE-2026-76473
Full vulnerability record from the local CVENow database.
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-2026-76473 are related to issues concerning improper neutralization of special elements in output used by a downstream component that are grouped under the Common Weakness Enumeration (CWE) Class CWE-74.
Severity
CRITICAL
CVSS score
9.8
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-10-21 17:19:06.973000
Last modified
2026-10-27 18:17:37.733000
View original CVE JSON
{
"id": "CVE-2026-76473",
"sourceIdentifier": "[email protected]",
"published": "2026-10-21T17:19:06.973",
"lastModified": "2026-10-27T18:17:37.733",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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.\r\n\r\nThe vulnerabilities tracked by CVE-2026-76473 are related to issues concerning improper neutralization of special elements in output used by a downstream component that are grouped under the Common Weakness Enumeration (CWE) Class CWE-74."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Emergency Responder",
"defaultStatus": "unknown",
"versions": [
{
"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",
"status": "affected"
}
]
},
{
"vendor": "Cisco",
"product": "Cisco Unified Communications Manager",
"defaultStatus": "unknown",
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{
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"status": "affected"
},
{
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{
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{
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},
{
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{
"version": "15SU1",
"status": "affected"
},
{
"version": "14SU4",
"status": "affected"
},
{
"version": "14SU4a",
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},
{
"version": "15SU1a",
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},
{
"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",
"status": "affected"
}
]
},
{
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"product": "Cisco Unified Communications Manager IM and Presence Service",
"defaultStatus": "unknown",
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"status": "affected"
},
{
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"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",
"status": "affected"
}
]
},
{
"vendor": "Cisco",
"product": "Cisco Unity Connection",
"defaultStatus": "unknown",
"versions": [
{
"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",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-21T00:00:00+00:00",
"id": "CVE-2026-76473",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-74"
}
]
}
],
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-hardening-twgbH9e3",
"source": "[email protected]"
}
]
}