CVE-2026-26143

{"id": "CVE-2026-26143", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-04-14T18:16:45.620", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26143", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally."}], "lastModified": "2026-04-27T19:59:18.223", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "829CDFB8-FB01-4E66-85D8-33F093A907B9", "versionEndExcluding": "7.4.14", "versionStartIncluding": "7.4"}, {"criteria": "cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EF18DEDE-5231-4109-BEE2-E0DBF184ABEC", "versionEndExcluding": "7.5.5", "versionStartIncluding": "7.5"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}