CVE-2026-4374

{"id": "CVE-2026-4374", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4374", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-01T14:23:31.865417Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "3f572a00-62e2-4423-959a-7ea25eff1638", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.8, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "3f572a00-62e2-4423-959a-7ea25eff1638", "affectedData": [{"vendor": "RTI", "modules": ["Cloud Discovery Service", "Recording Service", "Routing Service", "Queueing Service", "Observability Collector"], "product": "Connext Professional", "versions": [{"status": "affected", "version": "7.4.0", "lessThan": "7.7.0", "versionType": "custom"}, {"status": "affected", "version": "7.1.0", "lessThan": "7.3.1.1", "versionType": "custom"}, {"status": "affected", "version": "6.1.0", "lessThan": "6.1.2.34", "versionType": "custom"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.0.*", "versionType": "custom"}, {"status": "affected", "version": "5.3.0", "lessThan": "5.3.*", "versionType": "custom"}], "packageURL": "pkg:generic/connext_professional", "packageName": "connext_professional", "defaultStatus": "unaffected"}]}], "published": "2026-04-01T02:16:03.540", "references": [{"url": "https://www.rti.com/vulnerabilities/#cve-2026-4374", "tags": ["Vendor Advisory"], "source": "3f572a00-62e2-4423-959a-7ea25eff1638"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "3f572a00-62e2-4423-959a-7ea25eff1638", "description": [{"lang": "en", "value": "CWE-611"}]}], "descriptions": [{"lang": "en", "value": "Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Cloud Discovery Service, Recording Service, Routing Service, Queueing Service, Observability Collector) allows Serialized Data External Linking, Data Serialization External Entities Blowup.<p>This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.1.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*.</p>"}, {"lang": "es", "value": "Vulnerabilidad de restricci\u00f3n incorrecta de referencia a entidad externa XML en RTI Connext Professional (Routing Service, Observability Collector, Recording Service, Queueing Service, Cloud Discovery Service) permite el enlace externo de datos serializados, la serializaci\u00f3n de datos..."}], "lastModified": "2026-06-17T19:18:09.953", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F8B1FE0A-A2E0-45AA-9ED2-CED9BDA02047", "versionEndIncluding": "5.3.1.45", "versionStartIncluding": "5.3.0"}, {"criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8369CEAE-4767-4910-AD55-3C6E8898EE5F", "versionEndIncluding": "6.0.1.40", "versionStartIncluding": "6.0.0"}, {"criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2042782E-93AB-4D92-9DB0-3377557B5B46", "versionEndIncluding": "6.1.2.27", "versionStartIncluding": "6.1.0"}, {"criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9F77FCD6-D5AC-46DF-99BF-D9E30919B5E4", "versionEndExcluding": "7.3.1.1", "versionStartIncluding": "7.0.0"}, {"criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DF87EB0F-A1CD-40D1-96F0-53D964E34BFC", "versionEndExcluding": "7.7.0", "versionStartIncluding": "7.4.0"}], "operator": "OR"}]}], "sourceIdentifier": "3f572a00-62e2-4423-959a-7ea25eff1638"}