CVE-2025-53809

{"id": "CVE-2025-53809", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2025-09-09T17:15:52.163", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53809", "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 Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network."}], "lastModified": "2025-09-22T17:12:18.433", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E1B4513-36E7-4DCD-96B3-A56184D37C87", "versionEndExcluding": "10.0.26100.6508"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B7DF196D-36BE-4A48-844E-E1D8405A9E1A", "versionEndExcluding": "10.0.26100.6508"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}