CVE-2025-58903 Null dereference in FortiOS

What is CVE-2025-58903?

CVE-2025-58903 is a low-severity vulnerability in Fortinet Fortios, published on 14 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An Unchecked Return Value vulnerability [CWE-252] in Fortinet FortiOS version 7.6.0 through 7.6.3 and before 7.4.8 API allows an authenticated user to cause a Null Pointer Dereference, crashing the http daemon via a specialy crafted request.

Weakness: CWE-252

Which versions are affected by CVE-2025-58903?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2025-58903?

No fix has been published for CVE-2025-58903 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-58903 being exploited?

There is no known exploitation of CVE-2025-58903 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-9rvw-gg78-wfm7.