{"cveID":"CVE-2021-27102","vendorProject":"Accellion","product":"FTA","vulnerabilityName":"Accellion FTA OS Command Injection Vulnerability","dateAdded":"2021-11-03","shortDescription":"Accellion FTA contains an OS command injection vulnerability exploited via a local web service call.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2021-11-17","knownRansomwareCampaignUse":"Known","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-27102","cwes":["CWE-20","CWE-78"],"year":2021,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2021-27102","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"command_injection","comments":"CVE-2021-27102 is an operating system command execution vulnerability in Accellion File Transfer Appliance that allows an adversary to execute arbitrary commands via a local web service call.\n ","references":["https://cloud.google.com/blog/topics/threat-intelligence/accellion-fta-exploited-for-data-theft-and-extortion/","https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-055a"],"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-2021-27102","technique":"T1005","technique_name_at_mapping":"Data from Local System","mapping_type":"secondary_impact","capability_group":"command_injection","comments":"CVE-2021-27102 is an operating system command execution vulnerability in Accellion File Transfer Appliance that allows an adversary to execute arbitrary commands via a local web service call.","references":["https://cloud.google.com/blog/topics/threat-intelligence/accellion-fta-exploited-for-data-theft-and-extortion/","https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-055a"],"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-2021-27102","technique":"T1059","technique_name_at_mapping":"Command and Scripting Interpreter","mapping_type":"primary_impact","capability_group":"command_injection","comments":"CVE-2021-27102 is an operating system command execution vulnerability in Accellion File Transfer Appliance that allows an adversary to execute arbitrary commands via a local web service call.","references":["https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-055a","https://cloud.google.com/blog/topics/threat-intelligence/accellion-fta-exploited-for-data-theft-and-extortion/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1005","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Data from Local System","name_at_mapping":"Data from Local System","renamed":false,"revoked_by":null,"mapping_types":["secondary_impact"],"sigma_rule_count":14,"has_detection_strategy":true},{"id":"T1059","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Command and Scripting Interpreter","name_at_mapping":"Command and Scripting Interpreter","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":95,"has_detection_strategy":true},{"id":"T1190","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploit Public-Facing Application","name_at_mapping":"Exploit Public-Facing Application","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":149,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact","secondary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-23 05:47 UTC","_attack_version":"19.2"}