CVE-2021-36166

9.8 criticalEPSS 1.5%

Critical (9.8) in fortinet fortimail. EPSS 1.5% chance of exploitation in the next 30 days.

An improper authentication vulnerability in FortiMail before 7.0.1 may allow a remote attacker to efficiently guess one administrative account's authentication token by means of the observation of certain system's properties.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE: CWE-330
Published: 2022-03-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fortinet:fortimail

References

https://fortiguard.com/psirt/FG-IR-21-028
https://fortiguard.com/psirt/FG-IR-21-028

Check your stack JSON