{"revision":"32bbd24520684eaa84153edbb63c4a1d","evidence":{"cve":"CVE-2021-26858","kev":{"cve":"CVE-2021-26858","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-2021-26858","cisaUrl":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-26858"},"epss":null,"observedAt":"2026-10-23T16:01:26.7735792+00:00","kevRetained":false,"reviewIdentity":"618b4c6e00fdb8ba95e3f650"}}