CVE-2026-85879

{"id": "CVE-2026-85879", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-85879", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-11T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Windows Subsystem for Linux (WSL2)", "versions": [{"status": "affected", "version": "5.0.0.0", "lessThan": "2.7.10", "versionType": "custom"}]}]}], "published": "2026-10-13T19:21:15.073", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85879", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally."}], "lastModified": "2026-10-29T15:03:57.737", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:windows_subsystem_for_linux:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "676A76D8-54DD-4C20-A81D-050E781E55CF", "versionEndExcluding": "2.7.10", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}