{"id":"CVE-2021-3391","aliases":["EUVD-2021-26720","GHSA-v597-59x9-rgw3"],"status":"published","title":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled,...","description":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user accounts by observing the number of failed login attempts needed to produce a Lockout error message","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01191,"percentile":0.68177,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-03-29T19:37:09Z","modified":"2026-06-17T04:05:00Z","products":[{"vendor":"mobileiron","product":"mobile\\@work"}],"references":[{"url":"https://www.mobileiron.com/en/blog/mobileiron-security-updates-available","tags":["x_refsource_MISC","x_transferred","Not Applicable"]},{"url":"https://www.optiv.com/explore-optiv-insights/source-zero/mobileiron-mdm-contains-static-key-allowing-account-enumeration","tags":["x_refsource_MISC","x_transferred","Technical Description","Third Party Advisory"]},{"url":"https://github.com/optiv/rustyIron","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3391"},{"url":"https://github.com/advisories/GHSA-v597-59x9-rgw3"}],"sources":{"cve":[{"id":"CVE-2021-3391","description":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user accounts by observing the number of failed login attempts needed to produce a Lockout error message","status":"published","published":"2021-03-29T19:37:09Z","modified":"2024-08-03T16:53:17.425Z","updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26720","description":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user accounts by observing the number of failed login attempts needed to produce a Lockout error message","status":"published","published":"2021-03-29T19:37:09Z","modified":"2024-08-03T16:53:17Z","updated_at":"2026-11-03T03:25:13.052236Z"}],"ghsa":[{"id":"GHSA-v597-59x9-rgw3","title":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled,...","description":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user accounts by observing the number of failed login attempts needed to produce a Lockout error message","status":"published","published":"2022-05-24T17:45:40Z","modified":"2023-01-29T05:05:47Z","updated_at":"2026-11-02T14:45:52.819939Z"}],"nvd":[{"id":"CVE-2021-3391","description":"MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user accounts by observing the number of failed login attempts needed to produce a Lockout error message","status":"published","published":"2021-03-29T20:15:13.533Z","modified":"2026-06-17T04:05:00.833Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:51.197859Z"}]}}