{"cveID":"CVE-2021-27860","vendorProject":"FatPipe","product":"WARP, IPVPN, and MPVPN software","vulnerabilityName":"FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit","dateAdded":"2022-01-10","shortDescription":"A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software allows a remote, unauthenticated attacker to upload a file to any location on the filesystem.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2022-01-24","knownRansomwareCampaignUse":"Unknown","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-27860","cwes":["CWE-434"],"year":2021,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2021-27860","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"unrestricted_upload","comments":"CVE-2021-27860 is a vulnerability in the web management interface in FatPipe software. The vulnerability allowed APT actors to gain access to an unrestricted file upload function to drop a webshell for exploitation activity with root access, leading to elevated privileges and potential follow-on activity. Exploitation of this vulnerability then served as a jumping off point into other infrastructure for the APT actors. ","references":["https://www.itnews.com.au/news/volt-typhoon-attacks-attributed-to-china-596209","https://www.ic3.gov/CSA/2021/211117-2.pdf","https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-144a"],"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-2021-27860","technique":"T1505.003","technique_name_at_mapping":"Web Shell","mapping_type":"primary_impact","capability_group":"unrestricted_upload","comments":"CVE-2021-27860 is a vulnerability in the web management interface in FatPipe software. The vulnerability allowed APT actors to gain access to an unrestricted file upload function to drop a webshell for exploitation activity with root access, leading to elevated privileges and potential follow-on activity. Exploitation of this vulnerability then served as a jumping off point into other infrastructure for the APT actors. ","references":["https://www.itnews.com.au/news/volt-typhoon-attacks-attributed-to-china-596209","https://www.ic3.gov/CSA/2021/211117-2.pdf","https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-144a"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"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},{"id":"T1505.003","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Web Shell","name_at_mapping":"Web Shell","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":35,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_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"}