CVE-2026-21219

{"id": "CVE-2026-21219", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "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:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "published": "2026-01-13T18:16:24.580", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21219", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Primary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally."}], "lastModified": "2026-01-14T20:16:25.760", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:windows_software_development_kit:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73987B9B-1C5E-45E8-969C-EBA7A099BAA0", "versionEndExcluding": "10.0.26100.7463"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}