{"id":"CVE-2021-26099","aliases":["EUVD-2021-12920","GHSA-p3qq-3w96-8x5w"],"status":"published","title":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0...","description":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession of the encrypted master keys to compromise their confidentiality by observing a few invariant properties of the ciphertext.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00545,"percentile":0.4604,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327"],"published":"2021-07-12T09:56:37Z","modified":"2026-06-17T03:42:51Z","products":[{"vendor":"fortinet","product":"fortimail"},{"vendor":"fortinet","product":"fortinet fortimail"}],"references":[{"url":"https://fortiguard.com/advisory/FG-IR-20-244","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26099"},{"url":"https://github.com/advisories/GHSA-p3qq-3w96-8x5w"}],"sources":{"cve":[{"id":"CVE-2021-26099","description":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession of the encrypted master keys to compromise their confidentiality by observing a few invariant properties of the ciphertext.","status":"published","published":"2021-07-12T09:56:37Z","modified":"2024-10-25T13:56:14.639Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/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-2021-12920","description":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession of the encrypted master keys to compromise their confidentiality by observing a few invariant properties of the ciphertext.","status":"published","published":"2021-07-12T09:56:37Z","modified":"2024-10-25T13:56:14Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:05:18.633679Z"}],"ghsa":[{"id":"GHSA-p3qq-3w96-8x5w","title":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0...","description":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession of the encrypted master keys to compromise their confidentiality by observing a few invariant properties of the ciphertext.","status":"published","published":"2022-05-24T19:07:32Z","modified":"2023-08-17T05:02:07Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:54:45.82233Z"}],"nvd":[{"id":"CVE-2021-26099","description":"Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession of the encrypted master keys to compromise their confidentiality by observing a few invariant properties of the ciphertext.","status":"published","published":"2021-07-12T10:15:07.687Z","modified":"2026-06-17T03:42:51.583Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}