{"cvss":4.0,"datePublished":"2026-05-20","dateUpdated":"2026-05-20","description":"Microsoft Defender contains an unspecified vulnerability that allows for denial of service.","dueDate":"2026-06-03","id":"CVE-2026-45498","kev_catalogs":["cisa"],"knownRansomwareCampaignUse":"Unknown","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-45498 ; https://nvd.nist.gov/vuln/detail/CVE-2026-45498","product":"Defender","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","severity":"MEDIUM","source":"cisa_known_exploited","title":"Microsoft Defender Denial of Service Vulnerability","vendor":"Microsoft"}