CVE-2026-93393

{"id": "CVE-2026-93393", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-93393", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-18T17:33:19.062224Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cna@mongodb.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.2}], "cvssMetricV40": [{"type": "Secondary", "source": "cna@mongodb.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.2, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/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": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "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": "cna@mongodb.com", "affectedData": [{"vendor": "MongoDB Inc.", "product": "C Driver", "versions": [{"status": "affected", "version": "2.4.0", "versionType": "semver"}, {"status": "affected", "version": "2.3.0", "versionType": "semver", "lessThanOrEqual": "2.3.3"}, {"status": "affected", "version": "2.2.0", "versionType": "semver", "lessThanOrEqual": "2.2.4"}, {"status": "affected", "version": "2.1.0", "versionType": "semver", "lessThanOrEqual": "2.1.2"}, {"status": "affected", "version": "2.0.0", "versionType": "semver", "lessThanOrEqual": "2.0.2"}, {"status": "affected", "version": "1.30.0", "versionType": "semver", "lessThanOrEqual": "1.30.8"}, {"status": "affected", "version": "1.29.0", "versionType": "semver", "lessThanOrEqual": "1.29.2"}, {"status": "affected", "version": "1.28.0", "versionType": "semver", "lessThanOrEqual": "1.28.1"}, {"status": "affected", "version": "1.27.0", "versionType": "semver", "lessThanOrEqual": "1.27.6"}, {"status": "affected", "version": "1.26.0", "versionType": "semver", "lessThanOrEqual": "1.26.2"}, {"status": "affected", "version": "1.25.0", "versionType": "semver", "lessThanOrEqual": "1.25.4"}, {"status": "affected", "version": "1.24.0", "versionType": "semver", "lessThanOrEqual": "1.24.4"}], "platforms": ["Windows"], "defaultStatus": "unaffected"}]}], "published": "2026-09-17T21:17:56.163", "references": [{"url": "https://jira.mongodb.org/browse/CDRIVER-6417", "tags": ["Vendor Advisory"], "source": "cna@mongodb.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cna@mongodb.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "A heap-based buffer overflow exists in the TLS transport layer of the MongoDB C Driver when built with the Windows platform TLS backend. A remote endpoint that the client connects to can cause the driver to write uncontrolled data outside the bounds of a heap allocation while processing incoming encrypted traffic after the TLS handshake completes. No authentication or user interaction is required, because the affected processing occurs before any application-level authentication completes. Triggering this issue may lead to memory corruption in the client process, disclosure of adjacent heap memory, or termination of the process."}], "lastModified": "2026-09-29T19:17:54.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mongodb:c_driver:*:*:*:*:*:mongodb:*:*", "vulnerable": true, "matchCriteriaId": "776CE4E9-EE97-4131-8A59-13779C4CE0A0", "versionEndExcluding": "1.30.11", "versionStartIncluding": "1.10.0"}, {"criteria": "cpe:2.3:a:mongodb:c_driver:*:*:*:*:*:mongodb:*:*", "vulnerable": true, "matchCriteriaId": "760AC02A-E865-4396-A2E4-5C61CBAD39B2", "versionEndExcluding": "2.5.4", "versionStartIncluding": "2.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "cna@mongodb.com"}