{"id":"CVE-2021-27198","aliases":["EUVD-2021-13963","GHSA-q9xv-9vww-9m7g"],"status":"published","title":"An issue was discovered in Visualware MyConnection Server through 11.0b build 5382....","description":"An issue was discovered in Visualware MyConnection Server before v11.1a. Unauthenticated Remote Code Execution can occur via Arbitrary File Upload in the web service when using a myspeed/sf?filename= URI. This application is written in Java and is thus cross-platform. The Windows installation runs as SYSTEM, which means that exploitation gives one Administrator privileges on the target system.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.12687,"percentile":0.96316,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2021-02-26T22:53:27Z","modified":"2026-06-17T03:44:27Z","exploits":[{"source":"pocgithub","id":"rwincey/CVE-2021-27198","title":"rwincey/CVE-2021-27198","date":"2023-10-25","url":"https://github.com/rwincey/CVE-2021-27198"}],"products":[{"vendor":"visualware","product":"myconnection_server"}],"references":[{"url":"https://myconnectionserver.visualware.com/download.html","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://myconnectionserver.visualware.com/support/newrelease.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"http://seclists.org/fulldisclosure/2021/Feb/81","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/161571/VisualWare-MyConnection-Server-11.x-Remote-Code-Execution.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.securifera.com/advisories/cve-2021-27198/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27198"},{"url":"https://github.com/advisories/GHSA-q9xv-9vww-9m7g"}],"sources":{"cve":[{"id":"CVE-2021-27198","description":"An issue was discovered in Visualware MyConnection Server before v11.1a. Unauthenticated Remote Code Execution can occur via Arbitrary File Upload in the web service when using a myspeed/sf?filename= URI. This application is written in Java and is thus cross-platform. The Windows installation runs as SYSTEM, which means that exploitation gives one Administrator privileges on the target system.","status":"published","published":"2021-02-26T22:53:27Z","modified":"2024-08-03T20:40:47.48Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-13963","description":"An issue was discovered in Visualware MyConnection Server before v11.1a. Unauthenticated Remote Code Execution can occur via Arbitrary File Upload in the web service when using a myspeed/sf?filename= URI. This application is written in Java and is thus cross-platform. The Windows installation runs as SYSTEM, which means that exploitation gives one Administrator privileges on the target system.","status":"published","published":"2021-02-26T22:53:27Z","modified":"2024-08-03T20:40:47Z","updated_at":"2026-11-03T03:24:49.808499Z"}],"ghsa":[{"id":"GHSA-q9xv-9vww-9m7g","title":"An issue was discovered in Visualware MyConnection Server through 11.0b build 5382....","description":"An issue was discovered in Visualware MyConnection Server through 11.0b build 5382. Unauthenticated Remote Code Execution can occur via Arbitrary File Upload in the web service when using a myspeed/sf?filename= URI. This application is written in Java and is thus cross-platform. The Windows installation runs as SYSTEM, which means that exploitation gives one Administrator privileges on the target system.","status":"published","published":"2022-05-24T17:43:22Z","modified":"2023-01-29T05:05:32Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:45:48.864861Z"}],"nvd":[{"id":"CVE-2021-27198","description":"An issue was discovered in Visualware MyConnection Server before v11.1a. Unauthenticated Remote Code Execution can occur via Arbitrary File Upload in the web service when using a myspeed/sf?filename= URI. This application is written in Java and is thus cross-platform. The Windows installation runs as SYSTEM, which means that exploitation gives one Administrator privileges on the target system.","status":"published","published":"2021-02-26T23:15:11.263Z","modified":"2026-06-17T03:44:27.267Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:50.399901Z"}]}}