{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45498", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-05-12T16:07:22.619Z", "datePublished": "2026-05-20T13:09:12.903Z", "dateUpdated": "2026-05-20T13:13:08.415Z"}, "containers": {"cna": {"title": "Microsoft Defender Denial of Service Vulnerability", "datePublic": "2026-05-19T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:microsoft_defender:*:*:*:*:*:*:*:*", "versionStartIncluding": "-"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft Defender Antimalware Platform", "versions": [{"version": "-", "status": "affected"}]}], "descriptions": [{"value": "Microsoft Defender Denial of Service Vulnerability", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "Denial of Service", "lang": "en-US", "type": "Impact"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-05-20T13:13:08.415Z"}, "references": [{"name": "Microsoft Defender Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 4, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C"}}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Microsoft Defender Denial of Service Vulnerability"}], "id": "CVE-2026-45498", "lastModified": "2026-05-20T13:57:15.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 1.4, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-05-20T13:16:36.780", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Awaiting Analysis"}

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