CVE-2023-33307

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-16 · updated 2026-06-17
Weakness: CWE-476

Description

A null pointer dereference in Fortinet FortiOS before 7.2.5 and before 7.0.11, FortiProxy before 7.2.3 and before 7.0.9 allows attacker to denial of sslvpn service via specifically crafted request in network parameter.

Affected products

Fortinet FortiOS (FortiGate): from 7.0.0 before 7.0.11; from 7.2.0 before 7.2.5 — fixed in 7.0.11, 7.2.5
Fortinet FortiProxy: from 7.0.0 through 7.0.9; from 7.2.0 through 7.2.3

How to fix

Upgrade to a fixed version: Fortinet FortiOS (FortiGate) 7.0.11, 7.2.5. Check the vendor advisory for mitigations.

References

https://fortiguard.com/psirt/FG-IR-23-015
https://exchange.xforce.ibmcloud.com/vulnerabilities/258201
https://fortiguard.com/psirt/FG-IR-23-015

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