NetSight
medium4.7

CVE-2022-26122

An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines version 6.2.168 and below and versio…

Impact

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.

Affected products

VendorProductAffected versions
FortinetAntivirus Engine
Versions 0.4.23, 2.0.49, 2.0.60, 4.4.54, 6.33, 6.137
FortinetFortimail
from 6.0.0 through 6.0.12
from 6.2.0 through 6.2.9
from 6.4.0 through 6.4.6
from 7.0.0 through 7.0.2
Version 4.1.0
FortinetFortios
from 6.0.0 through 6.0.15
from 6.2.0 through 6.2.11
from 6.4.0 through 6.4.10
from 7.0.0 through 7.0.6
Version 7.2.0

Weakness classification

References