FortiOS 7.2/7.4 NULL Pointer Deref in httpsd via crafted HTTP
CVE-2026-84392 Published on September 8, 2026
A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiOS 7.4 all versions, FortiOS 7.2 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.
Vulnerability Analysis
CVE-2026-84392 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
Products Associated with CVE-2026-84392
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Affected Versions
Fortinet FortiOS:- Version 7.4.0, <= 7.4.12 is affected.
- Version 7.2.0, <= 7.2.13 is affected.
- Version 7.0.0, <= 7.0.19 is affected.
- Version 6.4.0, <= 6.4.16 is affected.
- Version 7.6.0, <= 7.6.6 is affected.
- Version 7.4.0, <= 7.4.14 is affected.
- Version 7.2.0, <= 7.2.16 is affected.
- Version 1.9.0 is affected.
- Version 1.8.0, <= 1.8.4 is affected.
- Version 1.7.0, <= 1.7.2 is affected.
- Version 1.6.0, <= 1.6.2 is affected.
- Version 1.5.0, <= 1.5.1 is affected.
- Version 1.4.0, <= 1.4.3 is affected.
- Version 1.3.0, <= 1.3.1 is affected.
- Version 1.2.0 is affected.
- Version 1.1.0, <= 1.1.2 is affected.
- Version 1.0.0, <= 1.0.3 is affected.