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Critical severity9.8NVD Advisory· Published Mar 1, 2022· Updated Jun 17, 2026

CVE-2021-36166

CVE-2021-36166

Description

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.

Affected products

4
  • Fortinet/Fortimail4 versions
    cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*range: <=5.4.12
    • cpe:2.3:a:fortinet:fortimail:7.0.0:*:*:*:*:*:*:*
    • (no CPE)range: <7.0.1
    • (no CPE)range: FortiMail before 7.0.1

Patches

Vulnerability mechanics

References

1

News mentions

0

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