{"id":"CVE-2021-26100","aliases":["EUVD-2021-12921","GHSA-j84j-6h2f-jqj3"],"status":"published","title":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0...","description":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00342,"percentile":0.28018,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-311","CWE-347"],"published":"2021-07-09T18:23:01Z","modified":"2026-06-17T03:42:51Z","products":[{"vendor":"fortinet","product":"fortimail"},{"vendor":"fortinet","product":"fortinet fortimail"}],"references":[{"url":"https://fortiguard.com/advisory/FG-IR-21-003","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26100"},{"url":"https://github.com/advisories/GHSA-j84j-6h2f-jqj3"}],"sources":{"cve":[{"id":"CVE-2021-26100","description":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.","status":"published","published":"2021-07-09T18:23:01Z","modified":"2024-10-25T13:57:15.657Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-12921","description":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.","status":"published","published":"2021-07-09T18:23:01Z","modified":"2024-10-25T13:57:15Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:05:18.633679Z"}],"ghsa":[{"id":"GHSA-j84j-6h2f-jqj3","title":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0...","description":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.","status":"published","published":"2022-05-24T19:07:19Z","modified":"2023-01-27T05:03:02Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-311"],"updated_at":"2026-11-02T14:42:09.625504Z"}],"nvd":[{"id":"CVE-2021-26100","description":"A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.","status":"published","published":"2021-07-09T19:15:08.253Z","modified":"2026-06-17T03:42:51.697Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}