CVE-2022-26122

8.6 highEPSS 0.6%

High (8.6) in fortinet. EPSS 0.6% chance of exploitation in the next 30 days.

An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines version 6.2.168 and below and version 6.4.274 and below may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.

Severity

CVSS 3.1

8.6 high

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-11-01)
CWE: CWE-345
Published: 2022-11-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fortinet:antivirus_engine
fortinet:fortimail
fortinet:fortios

References

https://fortiguard.com/psirt/FG-IR-22-074
https://fortiguard.com/psirt/FG-IR-22-074

Check your stack JSON