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Heap overflow in kernel driver due to missing size validation

🗓️ 12 Aug 2026 00:00:00Reported by FortiGuard LabsType 
fortinet
 fortinet
🔗 fortiguard.fortinet.com👁 5 Views

Unauthenticated heap overflow in FortiClient Windows kernel driver allows arbitrary code execution.

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fortinetforticlientwindowsRange7.4.0–7.4.3
fortinetforticlientwindowsRange7.2.0–7.2.11

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12 Aug 2026 00:00Current
8.3High risk
Vulners AI Score8.3
CVSS 3.18.1
EPSS0.00516
SSVC
5