CVE-2026-70465
High
Description
A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.3, FortiClientWindows 7.2.0 through 7.2.11 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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Fortinet Forticlient
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-120CWE-120
How to fix
Update
- fortinet forticlient7.2.12, 7.4.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fortinet forticlient | 7.2.0 ≤ v < 7.2.12, 7.4.0 ≤ v < 7.4.4 | 7.2.12, 7.4.4 |
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