{"schema":"threatline.record/2","record":{"id":"CVE-2021-26855","aliases":[],"summary":"Microsoft Exchange Server Remote Code Execution Vulnerability","details":"Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.","categories":["Applications & CMS"],"product":"Exchange Server","vendor":"Microsoft","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2013 Cumulative Update 21","vendor":"Microsoft","versions":[{"version":"15.00.0","lessThan":"15.00.1395.012","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2013 Cumulative Update 22","vendor":"Microsoft","versions":[{"version":"15.00.0","lessThan":"15.00.1473.006","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2013 Cumulative Update 23","vendor":"Microsoft","versions":[{"version":"15.00.0","lessThan":"15.00.1497.012","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 10","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1531.012","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 11","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1591.018","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 12","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1713.010","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 13","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1779.008","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 14","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1847.012","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 15","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1913.012","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 16","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1979.008","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 17","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.2044.013","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 18","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.2106.013","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 19","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.2176.009","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 8","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1415.010","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2016 Cumulative Update 9","vendor":"Microsoft","versions":[{"version":"15.01.0","lessThan":"15.01.1466.016","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0221.018","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 1","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.01.1979.006","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 2","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0397.011","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 3","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0464.015","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 4","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0659.012","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 5","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0595.008","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 6","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0529.013","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 7","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0721.013","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft Exchange Server 2019 Cumulative Update 8","vendor":"Microsoft","versions":[{"version":"15.02.0","lessThan":"15.02.0792.010","versionType":"custom","status":"affected"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2013 Cumulative Update 21","ecosystem":null},"version":"15.00.1395.012","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2013 Cumulative Update 22","ecosystem":null},"version":"15.00.1473.006","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2013 Cumulative Update 23","ecosystem":null},"version":"15.00.1497.012","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 10","ecosystem":null},"version":"15.01.1531.012","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 11","ecosystem":null},"version":"15.01.1591.018","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 12","ecosystem":null},"version":"15.01.1713.010","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 13","ecosystem":null},"version":"15.01.1779.008","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 14","ecosystem":null},"version":"15.01.1847.012","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 15","ecosystem":null},"version":"15.01.1913.012","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 16","ecosystem":null},"version":"15.01.1979.008","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 17","ecosystem":null},"version":"15.01.2044.013","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 18","ecosystem":null},"version":"15.01.2106.013","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 19","ecosystem":null},"version":"15.01.2176.009","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 8","ecosystem":null},"version":"15.01.1415.010","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2016 Cumulative Update 9","ecosystem":null},"version":"15.01.1466.016","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019","ecosystem":null},"version":"15.02.0221.018","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 1","ecosystem":null},"version":"15.01.1979.006","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 2","ecosystem":null},"version":"15.02.0397.011","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 3","ecosystem":null},"version":"15.02.0464.015","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 4","ecosystem":null},"version":"15.02.0659.012","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 5","ecosystem":null},"version":"15.02.0595.008","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 6","ecosystem":null},"version":"15.02.0529.013","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 7","ecosystem":null},"version":"15.02.0721.013","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","source_modified_at":"2026-08-19T16:30:15.282Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Microsoft Exchange Server 2019 Cumulative Update 8","ecosystem":null},"version":"15.02.0792.010","basis":"first unaffected version stated in the CVE record"}],"cvss":9.1,"severity":"Critical","kev":{"listed":true,"date_added":"2021-11-03","due_date":"2022-05-03","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Known"},"epss":{"probability":0.99996,"percentile":0.99989,"score_date":"2026-10-23"},"published_at":"2021-03-02T23:55:26.000Z","modified_at":"2026-08-19T16:30:15.282Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2021-26855","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-08-19T16:30:15.282Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/exchange_proxylogon_collector.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-03-02"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/exchange_proxylogon_rce.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-03-02"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/exchange_proxylogon.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-03-02"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/49663","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-03-14"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/49637","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-03-11"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/49879","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-05-18"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/49895","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-05-21"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26855.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-26855","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","Exploit-DB","Nuclei","EPSS"],"references":[{"source":"CVE List","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26855","tags":["vendor-advisory","patch"]},{"source":"CVE List","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26855","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2021-03-01T00:00:00+00:00"},"exploits":[{"source":"Metasploit","kind":"Auxiliary module","name":"Microsoft Exchange ProxyLogon Collector","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/exchange_proxylogon_collector.rb","date":"2021-03-02","added":"2024-01-07","check":false},{"source":"Metasploit","kind":"Exploit module","name":"Microsoft Exchange ProxyLogon RCE","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/exchange_proxylogon_rce.rb","date":"2021-03-02","added":"2025-12-17","check":true},{"source":"Metasploit","kind":"Auxiliary module","name":"Microsoft Exchange ProxyLogon Scanner","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/exchange_proxylogon.rb","date":"2021-03-02","added":"2026-04-15","check":false},{"source":"Exploit-DB","kind":"Remote exploit","name":"Microsoft Exchange 2019 - Server-Side Request Forgery","url":"https://www.exploit-db.com/exploits/49663","date":"2021-03-14","added":"2021-03-18","verified":false},{"source":"Exploit-DB","kind":"Webapps exploit","name":"Microsoft Exchange 2019 - Server-Side Request Forgery (Proxylogon) (PoC)","url":"https://www.exploit-db.com/exploits/49637","date":"2021-03-11","added":"2021-03-11","verified":false},{"source":"Exploit-DB","kind":"Webapps exploit","name":"Microsoft Exchange 2019 - Unauthenticated Email Download","url":"https://www.exploit-db.com/exploits/49879","date":"2021-05-18","added":"2021-05-18","verified":false},{"source":"Exploit-DB","kind":"Webapps exploit","name":"Microsoft Exchange 2019 - Unauthenticated Email Download (Metasploit)","url":"https://www.exploit-db.com/exploits/49895","date":"2021-05-21","added":"2021-05-21","verified":false},{"source":"Nuclei","kind":"Scanner template","name":"Microsoft Exchange Server SSRF Vulnerability","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26855.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-08-19T16:30:15.282Z","content_hash":"609c60ce98766e68c7ac34b2d39a1732d4576679197a24787d94c8b61291c135"}}