{"id":"CVE-2022-41040","published":"2022-10-03T01:15:08Z","modified":"2026-06-17T05:02:28Z","title":"Microsoft Exchange Server Server-Side Request Forgery Vulnerability","vendor":"Microsoft","product":"Exchange Server","tier":"core","eol":null,"description":{"text":"Microsoft Exchange Server Elevation of Privilege Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"Microsoft Exchange Server contains a server-side request forgery flaw that lets an attacker make the server issue requests it should not. An attacker with network access and low-privilege authenticated credentials, requiring no user interaction, can exploit it to cause the Exchange Server to send crafted requests on their behalf.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:53:24Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.99956,"percentile":0.99975,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2022-09-30","dueDate":"2022-10-21","ransomware":true,"requiredAction":"Apply updates per vendor instructions.","notes":"https://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/;  https://nvd.nist.gov/vuln/detail/CVE-2022-41040","provenance":"source"},"vulncheckKev":{"dateAdded":"2022-09-29","exploitedFirstSeen":"2022-09-29","ransomware":true,"evidence":[{"url":"https://gteltsc.vn/blog/warning-new-attack-campaign-utilized-a-new-0day-rce-vulnerability-on-microsoft-exchange-server-12715.html","date":"2022-09-29"},{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2022-Sep","date":"2022-09-30"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-09-30"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2022-11-08"},{"url":"https://securelist.com/cve-2022-41040-and-cve-2022-41082-zero-days-in-ms-exchange/108364/","date":"2022-12-19"},{"url":"https://go.recordedfuture.com/hubfs/reports/ta-2023-0302.pdf","date":"2022-12-20"},{"url":"https://analyst1.com/ransomware-diaries-volume-1/","date":"2023-01-17"},{"url":"https://raw.githubusercontent.com/blackorbird/APT_REPORT/master/summary/2023/360_APT_Annual_Research_Report_2022.pdf","date":"2023-01-17"},{"url":"https://www.cert.ssi.gouv.fr/uploads/CERTFR-2023-CTI-001.pdf","date":"2023-01-24"},{"url":"https://info.securin.io/hubfs/Securin%20Ransomware%20Report%202023.pdf","date":"2023-02-14"}],"evidenceTotal":51,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41040","tags":["Patch","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040","tags":["Mitigation","Patch","Vendor Advisory"]},{"url":"https://www.kb.cert.org/vuls/id/915563","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/","tags":["Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41040","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Network-exploitable public-facing Exchange server, low privileges","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Microsoft Exchange Server Elevation of Privilege Vulnerability","start":0,"end":62}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Vulnerability yields privilege escalation on the server","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Microsoft Exchange Server Elevation of Privilege Vulnerability","start":0,"end":62}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-622b5f77d51256e536ea","title":"Cadet Blizzard emerges as a novel and distinct Russian threat actor","publisher":"microsoft.com","url":"https://www.microsoft.com/en-us/security/blog/2023/06/14/cadet-blizzard-emerges-as-a-novel-and-distinct-russian-threat-actor/","date":"2023-06-14","mentions":[{"quote":"Cadet Blizzard is also known for exploiting Confluence servers through the CVE-2021-26084 vulnerability, Exchange servers through multiple vulnerabilities including CVE-2022-41040 and ProxyShell, and likely commodity vulnerabilities in various open-source platforms such as content management systems.","start":9503,"end":9804}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2022-44285","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-44285","exploited":true,"exploitedSince":"2022-09-30","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":7,"skipped":2,"earliest":"2022-10-02","earliestUrl":"https://github.com/numanturle/CVE-2022-41040","repos":[{"name":"kljunowsky/CVE-2022-41040-POC","url":"https://github.com/kljunowsky/CVE-2022-41040-POC","stars":90,"created":"2022-10-09"},{"name":"TaroballzChen/CVE-2022-41040-metasploit-ProxyNotShell","url":"https://github.com/TaroballzChen/CVE-2022-41040-metasploit-ProxyNotShell","stars":35,"created":"2022-10-20"},{"name":"numanturle/CVE-2022-41040","url":"https://github.com/numanturle/CVE-2022-41040","stars":19,"created":"2022-10-02"},{"name":"r3dcl1ff/CVE-2022-41040","url":"https://github.com/r3dcl1ff/CVE-2022-41040","stars":5,"created":"2022-10-04"},{"name":"d3duct1v/CVE-2022-41040","url":"https://github.com/d3duct1v/CVE-2022-41040","stars":5,"created":"2022-10-06"}]},"metasploit":[{"name":"Microsoft Exchange ProxyNotShell RCE","module":"exploit/windows/http/exchange_proxynotshell_rce","type":"exploit","disclosureDate":"2022-09-28","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/exchange_proxynotshell_rce.rb"}],"first":{"date":"2022-09-28","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/exchange_proxynotshell_rce.rb"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1068"],"provenance":"ai"}],"timeline":[{"date":"2022-09-28","kind":"exploit-public","label":"First public exploit: Metasploit; later: PoC-in-GitHub 2022-10-02","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/exchange_proxynotshell_rce.rb","provenance":"source"},{"date":"2022-09-29","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://gteltsc.vn/blog/warning-new-attack-campaign-utilized-a-new-0day-rce-vulnerability-on-microsoft-exchange-server-12715.html","provenance":"source"},{"date":"2022-09-30","kind":"kev","label":"Added to CISA KEV (known ransomware use)","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-09-30","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-44285","provenance":"source"},{"date":"2022-10-03","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-41040","provenance":"source"},{"date":"2023-06-14","kind":"report","label":"Named in microsoft.com: Cadet Blizzard emerges as a novel and distinct Russian threat actor","url":"https://www.microsoft.com/en-us/security/blog/2023/06/14/cadet-blizzard-emerges-as-a-novel-and-distinct-russian-threat-actor/","provenance":"machine"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":null},"priority":{"score":83.0,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1491 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":20.0,"detail":"percentile 0.9998"},{"name":"Named in threat reports","points":3.87,"detail":"1 report"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 7 PoC-in-GitHub repos; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-microsoft-exchange-server-cwe-918"}}