{"revision":"4c3b172a944c4ccb9bc73cc7887aeebb","evidence":{"cve":"CVE-2021-26857","kev":{"cve":"CVE-2021-26857","product":"Exchange Server","name":"Microsoft Exchange Server Remote Code Execution Vulnerability","dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareUse":true,"shortDescription":"Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.","vendor":"Microsoft","isMicrosoft":true,"products":[],"advisoryUrl":null,"publicExploit":null,"msrcUrl":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26857","cisaUrl":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-26857"},"epss":null,"observedAt":"2026-10-23T16:01:26.7735792+00:00","kevRetained":false,"reviewIdentity":"b9a9e30f3ebb889aac9906cc"}}