{"id":"CVE-2021-27860","kind":"vulnerability","aliases":["CVE-2021-27860"],"related":[],"title":"FatPipe WARP, IPVPN, and MPVPN software: FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit","description":"A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p92 and 10.2.2r44p1 allows a remote, unauthenticated attacker to upload a file to any location on the filesystem. The FatPipe advisory identifier for this vulnerability is FPSA006.","summary":"FatPipe WARP, IPVPN, and MPVPN software has a web management interface flaw that lets a remote attacker upload a file to any location on the filesystem. Uploading a file to a chosen path is typically enough to plant code and take over the appliance.","severity":"critical","cvss":9.8,"epss":0.3968,"exploited":true,"exploited_at":"2022-01-10T00:00:00+00:00","products":[{"name":"FatPipe WARP, IPVPN, and MPVPN software","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","fatpipe","infrastructure","self-hosted","vpn-appliance"],"not_affected_if":["web-management-interface-not-exposed"],"how_to_check":null,"fix":"Apply updates per vendor instructions (CISA KEV required action); the fixed version is unknown from the sources.","status":"open","published_at":"2021-12-08T17:15:10+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:31:42+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-23T21:31:42Z","model":"claude-haiku-5-5","output":{"fix":"Apply updates per vendor instructions (CISA KEV required action); the fixed version is unknown from the sources.","reach":"internet","impact":"high","summary":"FatPipe WARP, IPVPN, and MPVPN software has a web management interface flaw that lets a remote attacker upload a file to any location on the filesystem. Uploading a file to a chosen path is typically enough to plant code and take over the appliance.","category":"infrastructure","who_cares":["fatpipe","vpn-appliance","self-hosted"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker uploads files anywhere, enabling remote code execution on the device","analyst_note":"Find the FatPipe advisory and the fixed firmware versions and a way to check the installed version; sources given only say 'apply vendor updates' and KEV lists it as exploited.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["web-management-interface-not-exposed"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000476,"input_tokens":2880,"output_tokens":376,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Find the FatPipe advisory and the fixed firmware versions and a way to check the installed version; sources given only say 'apply vendor updates' and KEV lists it as exploited.","search":"'-2021':16A,19A '-27860':17A,20A '10.1.2':97C '10.2.2':100C 'advisori':119C 'allow':102C 'and':24A 'applianc':35B,79B 'attack':52B,106C 'chosen':67B 'code':74B 'configur':12A 'cve':15A,18A 'enough':71B 'exploit':14A,27B 'fatpip':1A,7A,28B,36B,88C,118C 'fatpipe':21A 'file':55B,64B,110C 'filesystem':61B,116C 'flaw':47B 'fpsa006':125C 'host':32B 'identifi':120C 'infrastructur':29B 'interfac':46B,86C 'ipvpn':3A,9A,23A,38B,90C 'let':49B 'locat':58B,113C 'manag':45B,85C 'mpvpn':5A,11A,25A,40B,92C 'path':68B 'plant':73B 'prior':94C 'r44p1':101C 'r60p92':98C 'remot':51B,104C 'self':31B 'self-host':30B 'softwar':6A,41B,93C 'software':26A 'take':76B 'typic':70B 'unauthent':105C 'upload':13A,53B,62B,108C 'version':96C 'vpn':34B 'vpn-applianc':33B 'vulner':81C,123C 'warp':2A,8A,22A,37B,89C 'web':44B,84C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2021-12-08T17:15:10+00:00","kev":{"dateAdded":"2022-01-10","dueDate":"2022-01-24","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"cret@cert.org","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2021-27860","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-27860","severity":null,"published_at":"2022-01-10T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:53+00:00","fetched_at":"2026-10-25T12:39:25+00:00","note":null},{"source":"epss","external_id":"CVE-2021-27860","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-27860","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2021-27860","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27860","severity":null,"published_at":"2021-12-08T17:15:10+00:00","modified_at":"2026-06-17T03:45:32+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}