Insufficient verification of data authenticity in Fortinet, Inc products - CVE-2022-26122

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Main Vulnerability Database Vulnerabilities #VU68929

Insufficient verification of data authenticity in Fortinet, Inc products - CVE-2022-26122

Published: November 2, 2022


Vulnerability identifier: #VU68929
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-26122
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient verification of data authenticity. A remote attacker can bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.


Affected software

AV engine
FortiOS
FortiMail

How to mitigate CVE-2022-26122

Install updates from vendor's website.

AV engine - addressed in versions 6.2.169, 6.4.275
FortiOS - addressed in versions 7.0.8, 7.2.2
FortiMail - addressed in versions 6.4.7, 7.0.3, 7.2.0

External References

Related Security Bulletins