What is CVE-2021-36166?

CVE-2021-36166 is a critical-severity vulnerability in Fortinet Fortimail. CVSS score: 9.8/10. Published 2022-03-01.

How severe is CVE-2021-36166?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Fortinet Fortimail

CVE-2021-36166

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.

EPSS: 0.005 (66.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C.

Affected products

Fortinet Fortimail — versions FortiMail before 7.0.1

References

fortiguard.com/psirt/FG-IR-21-028 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-36166?: CVE-2021-36166 is a critical-severity vulnerability in Fortinet Fortimail. CVSS score: 9.8/10. Published 2022-03-01.
How severe is CVE-2021-36166?: Critical severity. CVSS v3 base score is 9.8 out of 10.