CVE-2021-26095

8.8 highEPSS 0.7%

High (8.8) in fortinet fortimail. EPSS 0.7% chance of exploitation in the next 30 days.

The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the session cookie, may allow a remote attacker already in possession of a cookie to possibly reveal and alter or forge its content, thereby escalating privileges.

Severity

CVSS 3.1

8.8 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
Published: 2021-07-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fortinet:fortimail

References

https://fortiguard.com/advisory/FG-IR-21-019
https://fortiguard.com/advisory/FG-IR-21-019

Check your stack JSON