{"cveID":"CVE-2022-41082","vendorProject":"Microsoft","product":"Exchange Server","vulnerabilityName":"Microsoft Exchange Server Remote Code Execution Vulnerability","dateAdded":"2022-09-30","shortDescription":"Microsoft Exchange Server contains an unspecified vulnerability that allows for authenticated remote code execution. Dubbed \"ProxyNotShell,\" this vulnerability is chainable with CVE-2022-41040 which allows for the remote code execution.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2022-10-21","knownRansomwareCampaignUse":"Known","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-2022-41082","cwes":["CWE-502"],"year":2022,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1059.001","technique_name_at_mapping":"PowerShell","mapping_type":"exploitation_technique","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. ","references":["https://www.crowdstrike.com/en-us/blog/owassrf-exploit-analysis-and-recommendations/","https://www.darkreading.com/application-security/ransomware-attackers-bypass-microsoft-mitigation-proxynotshell-exploit","https://www.microsoft.com/en-us/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/","https://www.kb.cert.org/vuls/id/915563"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1078","technique_name_at_mapping":"Valid Accounts","mapping_type":"exploitation_technique","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. ","references":["https://www.crowdstrike.com/en-us/blog/owassrf-exploit-analysis-and-recommendations/","https://www.darkreading.com/application-security/ransomware-attackers-bypass-microsoft-mitigation-proxynotshell-exploit","https://www.microsoft.com/en-us/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/","https://www.kb.cert.org/vuls/id/915563"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1059.001","technique_name_at_mapping":"PowerShell","mapping_type":"primary_impact","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. ","references":["https://www.crowdstrike.com/en-us/blog/owassrf-exploit-analysis-and-recommendations/","https://www.darkreading.com/application-security/ransomware-attackers-bypass-microsoft-mitigation-proxynotshell-exploit","https://www.microsoft.com/en-us/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/","https://www.kb.cert.org/vuls/id/915563"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1087","technique_name_at_mapping":"Account Discovery","mapping_type":"secondary_impact","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. ","references":["https://www.crowdstrike.com/en-us/blog/owassrf-exploit-analysis-and-recommendations/","https://www.darkreading.com/application-security/ransomware-attackers-bypass-microsoft-mitigation-proxynotshell-exploit","https://www.microsoft.com/en-us/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/","https://www.kb.cert.org/vuls/id/915563"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1482","technique_name_at_mapping":"Domain Trust Discovery","mapping_type":"secondary_impact","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. ","references":["https://www.crowdstrike.com/en-us/blog/owassrf-exploit-analysis-and-recommendations/","https://www.darkreading.com/application-security/ransomware-attackers-bypass-microsoft-mitigation-proxynotshell-exploit","https://www.microsoft.com/en-us/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/","https://www.kb.cert.org/vuls/id/915563"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1505.003","technique_name_at_mapping":"Web Shell","mapping_type":"secondary_impact","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. ","references":["https://www.crowdstrike.com/en-us/blog/owassrf-exploit-analysis-and-recommendations/","https://www.darkreading.com/application-security/ransomware-attackers-bypass-microsoft-mitigation-proxynotshell-exploit","https://www.microsoft.com/en-us/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/","https://www.kb.cert.org/vuls/id/915563"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2022-41082","technique":"T1567","technique_name_at_mapping":"Exfiltration Over Web Service","mapping_type":"secondary_impact","capability_group":"code_execution","comments":"This vulnerability is exploited by a remote adversary who has either authenticated to a Microsoft Exchange Server or has gained access to PowerShell prior to leveraging this vulnerability. The adversary then performs remote code execution via PowerShell to install a Chopper web shell to perform Active Directory reconnaissance and data exfiltration. 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