CVE-2021-26100
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.
Key facts
- CVSS score
- 5.9 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
- CWE-347
- EPSS score
- 0.3% (26th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2021-12921)
- Published
- July 9, 2021
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2021-12921 in the EU Vulnerability Database. Last updated in EUVD on October 25, 2024.
View on the EU Vulnerability DatabaseAffected products
- fortinet / fortimail
Certified products that may be affected
6 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- FortiMail 6.0 - Fortinet, Inc. - FIPS 140 3380 - historical
- FortiMail-2000E/3000E - Fortinet, Inc. - FIPS 140 3363 - historical
- Fortinet FortiMail 6.0 - Fortinet, Inc. - Common Criteria CCEVS-VR-10899-2019 - archived
- FortiMail 5.2 - Fortinet, Inc. - FIPS 140 2539 - historical
- FortiMail-1000D and FortiMail-3000D - Fortinet, Inc. - FIPS 140 2540 - historical
See all 6 in the Security Certifications Explorer.
References
- https://fortiguard.com/advisory/FG-IR-21-003(Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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