High [CVE-2026-70465] Heap overflow in kernel driver due to missing size validation
This high-severity Fortinet advisory covers CVE-2026-70465 affecting FortiClientWindows.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
CVSSv3 Score:
7.3
A buffer copy without checking size of input vulnerability [CWE-120] in FortiClient Windows may allow an unauthenticated attacker in a position to alter or craft DNS responses to the targeted host to execute arbitrary code via malicious packets.
Revised on 2026-08-12 00:00:00
Affected product named by the advisory: FortiClientWindows.
- FortiClientWindows: 7.2.0 through 7.4.3 (vendor-listed versions)
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
- FortiClientWindows 7.4: 7.4.4
- FortiClientWindows 7.2: 7.2.12
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
Mitigation checklist
- Upgrade per the Affected/Solution table: FortiClientWindows 7.4: 7.4.4; FortiClientWindows 7.2: 7.2.12.
- Disable application based filtering in FortiClient EMS VPN configuration:
- FortiClient EMS > Remote Access Profile > VPN Tunnel > "Toggle" Application Based
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
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