CVE-2026-84392 Null dereference in FortiOS
An authenticated attacker can crash the httpsd daemon via crafted HTTP requests, causing a denial of service on Fortinet devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84392?
CVE-2026-84392 is a low-severity vulnerability in Fortinet FortiOS, published on 8 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiPAM 1.9.0, FortiPAM 1.8 all versions, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.6, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an authenticated attacker to crash the httpsd daemon via crafted HTTP requests.
Weakness: CWE-476
Which versions are affected by CVE-2026-84392?
How do I fix CVE-2026-84392?
No fix has been published for CVE-2026-84392 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-84392 being exploited?
There is no known exploitation of CVE-2026-84392 in the wild and no public exploit code.
Sources
Also known as GHSA-ww3q-4pw6-jh9g.