CVE-2026-7866

{"id": "CVE-2026-7866", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7866", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-22T00:00:00+00:00"}}], "cvssMetricV40": [{"type": "Secondary", "source": "3f572a00-62e2-4423-959a-7ea25eff1638", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 10.0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "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": ["Core Libraries"], "product": "Connext Professional", "versions": [{"status": "affected", "version": "7.4.0", "lessThan": "7.7.0.1", "versionType": "custom"}, {"status": "affected", "version": "7.0.0", "lessThan": "7.3.1.6", "versionType": "custom"}, {"status": "affected", "version": "6.1.0", "lessThan": "6.1.*", "versionType": "custom"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.0.*", "versionType": "custom"}, {"status": "affected", "version": "5.3.0", "lessThan": "5.3.*", "versionType": "custom"}, {"status": "affected", "version": "5.2.0", "lessThan": "5.2.*", "versionType": "custom"}, {"status": "affected", "version": "4.3x", "lessThan": "5.1.*", "versionType": "custom"}], "packageURL": "pkg:generic/connext_professional", "packageName": "connext_professional", "defaultStatus": "unaffected"}]}], "published": "2026-09-22T18:17:19.940", "references": [{"url": "https://www.rti.com/vulnerabilities/#cve-2026-7866", "source": "3f572a00-62e2-4423-959a-7ea25eff1638"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "3f572a00-62e2-4423-959a-7ea25eff1638", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.0 before 5.2.*, from 4.3x before 5.1.*."}], "lastModified": "2026-09-23T04:17:46.510", "sourceIdentifier": "3f572a00-62e2-4423-959a-7ea25eff1638"}