{"id":"CVE-2021-42133","aliases":["EUVD-2021-29118","GHSA-fmw2-6w6r-r52f"],"status":"published","title":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an...","description":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02898,"percentile":0.87116,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434","CWE-829"],"published":"2021-12-07T13:13:35Z","modified":"2026-06-17T04:09:24Z","products":[{"vendor":"ivanti","product":"avalanche"}],"references":[{"url":"https://forums.ivanti.com/s/article/Security-Alert-CVE-s-Addressed-in-Avalanche-6-3-3","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42133"},{"url":"https://github.com/advisories/GHSA-fmw2-6w6r-r52f"}],"sources":{"cve":[{"id":"CVE-2021-42133","description":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.","status":"published","published":"2021-12-07T13:13:35Z","modified":"2024-08-04T03:30:37.497Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29118","description":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.","status":"published","published":"2021-12-07T13:13:35Z","modified":"2024-08-04T03:30:37Z","updated_at":"2026-11-03T03:24:16.217613Z"}],"ghsa":[{"id":"GHSA-fmw2-6w6r-r52f","title":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an...","description":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.","status":"published","published":"2021-12-08T00:01:30Z","modified":"2023-02-01T05:06:46Z","cwes":["CWE-829"],"updated_at":"2026-11-02T14:50:25.046492Z"}],"nvd":[{"id":"CVE-2021-42133","description":"An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.","status":"published","published":"2021-12-07T14:15:09.553Z","modified":"2026-06-17T04:09:24.193Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-434","CWE-829"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}