What is the severity of CVE-2023-42786?

CVE-2023-42786 is considered a high severity vulnerability due to its potential to trigger a denial of service.

How do I fix CVE-2023-42786?

To fix CVE-2023-42786, upgrade to FortiOS versions 7.4.2 or later, or the respective secure versions for older releases.

Which versions of FortiOS are affected by CVE-2023-42786?

CVE-2023-42786 affects FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, and all versions of 7.0, 6.4, 6.2, and 6.0.

Can CVE-2023-42786 be exploited remotely?

Yes, CVE-2023-42786 can be exploited remotely via crafted HTTP requests.

What impact does CVE-2023-42786 have on the system?

The impact of CVE-2023-42786 is a denial of service, affecting the availability of the FortiOS system.

Vulnerability/
CVE-2023-42786

medium

6.5

CWE

476

14/1/2025

17/1/2025

CVE-2023-42786: Null Pointer Dereference

First published: Tue Jan 14 2025(Updated: )

A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.

Credit: psirt@fortinet.com

Affected Software	Affected Version	How to fix
Fortinet FortiOS IPS Engine	>=6.0.0<7.2.6
Fortinet FortiOS IPS Engine	>=7.4.0<7.4.2

Remedy

Please upgrade to FortiSASE version 23.4.a or above Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.6 or above

Never miss a vulnerability like this again

Reference Links

https://fortiguard.fortinet.com/psirt/FG-IR-23-293

Frequently Asked Questions

What is the severity of CVE-2023-42786?
CVE-2023-42786 is considered a high severity vulnerability due to its potential to trigger a denial of service.
How do I fix CVE-2023-42786?
To fix CVE-2023-42786, upgrade to FortiOS versions 7.4.2 or later, or the respective secure versions for older releases.
Which versions of FortiOS are affected by CVE-2023-42786?
CVE-2023-42786 affects FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, and all versions of 7.0, 6.4, 6.2, and 6.0.
Can CVE-2023-42786 be exploited remotely?
Yes, CVE-2023-42786 can be exploited remotely via crafted HTTP requests.
What impact does CVE-2023-42786 have on the system?
The impact of CVE-2023-42786 is a denial of service, affecting the availability of the FortiOS system.

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version/fortinet fortios ips engine/7.4.0

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