CVE-2026-12374
Full vulnerability record from the local CVENow database.
Description
Improper certificate validation and a time-of-check time-of-use (TOCTOU) race condition in the PrivilegedHelperTool XPC service in Cato Client before v.5.13.1 on macOS allows a local authenticated attacker to escalate privileges to root via a self-signed certificate that bypasses the XPC caller verification and a symlink swap during package installation.
Severity
MEDIUM
CVSS score
6.4
(v4.0)
Vulnerability status
Deferred
Source identifier
2505284f-8ffb-486c-bf60-e19c1097a90b
Published
2026-07-01 15:16:27.100000
Last modified
2026-10-25 17:10:00.197000
View original CVE JSON
{
"id": "CVE-2026-12374",
"sourceIdentifier": "2505284f-8ffb-486c-bf60-e19c1097a90b",
"published": "2026-07-01T15:16:27.100",
"lastModified": "2026-10-25T17:10:00.197",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Improper certificate validation and a time-of-check time-of-use (TOCTOU) race condition in the PrivilegedHelperTool XPC service in Cato Client before v.5.13.1 on macOS allows a local authenticated attacker to escalate privileges to root via a self-signed certificate that bypasses the XPC caller verification and a symlink swap during package installation."
},
{
"lang": "es",
"value": "Validación de certificados incorrecta y una condición de carrera de tipo tiempo de verificación tiempo de uso (TOCTOU) en el servicio XPC PrivilegedHelperTool en el cliente Cato anterior a la v.5.13.1 en macOS permite a un atacante local autenticado escalar privilegios a root a través de un certificado autofirmado que omite la verificación del llamador XPC y un intercambio de enlace simbólico durante la instalación del paquete."
}
],
"affected": [
{
"source": "2505284f-8ffb-486c-bf60-e19c1097a90b",
"affectedData": [
{
"vendor": "Cato Networks",
"product": "SDP Client",
"defaultStatus": "unaffected",
"modules": [
"PrivilegedHelperTool"
],
"platforms": [
"MacOS"
],
"versions": [
{
"version": "5.12.0",
"lessThan": "5.13.1",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "2505284f-8ffb-486c-bf60-e19c1097a90b",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:L/U:Amber",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "PROOF_OF_CONCEPT",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "YES",
"Recovery": "USER",
"valueDensity": "CONCENTRATED",
"vulnerabilityResponseEffort": "LOW",
"providerUrgency": "AMBER"
}
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-07-01T15:07:18.915117Z",
"id": "CVE-2026-12374",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "2505284f-8ffb-486c-bf60-e19c1097a90b",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-295"
},
{
"lang": "en",
"value": "CWE-367"
}
]
}
],
"references": [
{
"url": "https://support.catonetworks.com/hc/en-us/articles/37284626576413-Security-Vulnerability-CVE-2026-12374-that-Impacts-macOS-Client-Versions-Lower-than-5-13-1",
"source": "2505284f-8ffb-486c-bf60-e19c1097a90b"
}
]
}