CVE-2023-42786 Null dereference in FortiOS

What is CVE-2023-42786?

CVE-2023-42786 is a medium-severity vulnerability in Fortinet Fortios, published on 14 Jan 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-476

Which versions are affected by CVE-2023-42786?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2023-42786?

No fix has been published for CVE-2023-42786 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-42786 being exploited?

There is no known exploitation of CVE-2023-42786 in the wild and no public exploit code.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6956-r7m5-cgq5.