CVE-2026-76479
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-2026-76479 are related to issues concerning improper limitation of a pathname to a restricted directory that are grouped under the Common Weakness Enumeration (CWE) Base CWE-22.
CVSS
- Base score
- 7.8
- Version
- 3.1
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation probability (EPSS)
FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1068Exploitation for Privilege Escalationprivilege escalation80 % - Primary impact
T1005Data from Local Systemcollection60 %
CWE-22 (limitación de ruta) con vector AV:L/PR:L/UI:N, acceso local sin interacción: escalada/explotación local; el texto no detalla lectura de datos, la pista T1005 se usa con confianza moderada.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
ATT&CK mitigations that cover these techniques
Affected technologies (6)
⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.
CWEs
- CWE-22
References
Raw JSON (NVD)
Show
{
"id": "CVE-2026-76479",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "psirt@cisco.com",
"affectedData": [
{
"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"
}
]
}
],
"published": "2026-10-21T17:19:07.780",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-hardening-twgbH9e3",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Primary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
],
"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-2026-76479 are related to issues concerning improper limitation of a pathname to a restricted directory that are grouped under the Common Weakness Enumeration (CWE) Base CWE-22."
}
],
"lastModified": "2026-10-21T18:54:37.403",
"sourceIdentifier": "psirt@cisco.com"
}