{"id":"CVE-2021-3331","aliases":["EUVD-2021-26662","GHSA-rx6x-hw9j-xhm3"],"status":"published","title":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler...","description":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)","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":"2026-11-09","score":0.07703,"percentile":0.94644,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-01-27T20:22:25Z","modified":"2026-10-20T14:23:25Z","products":[{"vendor":"winscp","product":"winscp"}],"references":[{"url":"https://winscp.net/eng/docs/history#5.17.10","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://winscp.net/tracker/1943","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://github.com/winscp/winscp/commit/faa96e8144e6925a380f94a97aa382c9427f688d","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://winscp.net/eng/docs/rawsettings","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3331"},{"url":"https://github.com/advisories/GHSA-rx6x-hw9j-xhm3"}],"sources":{"cve":[{"id":"CVE-2021-3331","description":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)","status":"published","published":"2021-01-27T20:22:25Z","modified":"2026-10-08T21:03:32.228Z","updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26662","description":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)","status":"published","published":"2021-01-27T20:22:25Z","modified":"2026-10-08T21:03:32Z","updated_at":"2026-11-02T17:27:26.856493Z"}],"ghsa":[{"id":"GHSA-rx6x-hw9j-xhm3","title":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler...","description":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)","status":"published","published":"2022-05-24T17:40:29Z","modified":"2026-10-08T21:32:35Z","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"}],"updated_at":"2026-11-02T15:12:57.86261Z"}],"nvd":[{"id":"CVE-2021-3331","description":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)","status":"published","published":"2021-01-27T21:15:16.84Z","modified":"2026-10-08T21:17:39.89Z","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"}],"updated_at":"2026-11-02T14:06:49.660551Z"}],"osv":[{"id":"CVE-2021-3331","description":"WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)","status":"published","published":"2021-01-27T21:15:16.84Z","modified":"2026-10-20T14:23:25.726782909Z","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"}],"updated_at":"2026-11-02T15:44:19.793849Z"}]}}