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Medium severity4.7NVD Advisory· Published Nov 2, 2022· Updated Jun 17, 2026

CVE-2022-26122

CVE-2022-26122

Description

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

20
  • Fortinet/Antivirus Engine14 versions
    cpe:2.3:a:fortinet:antivirus_engine:0.4.23:*:*:*:*:*:*:*+ 13 more
    • cpe:2.3:a:fortinet:antivirus_engine:0.4.23:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:2.0.49:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:2.0.60:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:4.4.54:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.137:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.142:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.144:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.145:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.156:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.157:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.243:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.252:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.253:*:*:*:*:*:*:*
    • cpe:2.3:a:fortinet:antivirus_engine:6.33:*:*:*:*:*:*:*
  • Fortinet/Fortimail2 versions
    cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*range: >=6.0.0,<=6.0.12
    • cpe:2.3:a:fortinet:fortimail:4.1.0:*:*:*:*:*:*:*
  • Fortinet/Fortios2 versions
    cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*range: >=6.0.0,<=6.0.15
    • cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*
  • Fortinet/FortiOS AV enginellm-create
    Range: <=6.2.168 and <=6.4.274
  • Fortinet/Fortinet AV Engine, FortiMail, FortiOS, FortiClientv5
    Range: AV Engine version 6.2.168 and below and version 6.4.274 and below.

Patches

Vulnerability mechanics

References

1

News mentions

0

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