NULL pointer dereference in FortiOS - CVE-2023-42786
Published: April 9, 2025
Vulnerability identifier: #VU107320
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-42786
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in SSL VPN service. A remote user can send a specially crafted HTTP request and crash the system.
Affected software
FortiOS
How to mitigate CVE-2023-42786
Install update from vendor's website.
FortiOS - addressed in versions 7.2.6, 7.4.2