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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Fortinet | FortiClientWindows | 7.4.0 – ≤ 7.4.3, 7.2.0 – ≤ 7.2.11 | — |
Advisories 2
- NCSC-2026-0296 Kwetsbaarheid verholpen in Fortinet FortiClient NCSC-NL (Netherlands) · Aug 13, 2026
- WID-SEC-2026-2811 Fortinet FortiClient: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Aug 12, 2026