Vulnerability · Published Aug 12, 2026 · Assigned by fortinet
CVE-2026-70465
High 7.3
In plain English
A high-severity buffer overflow in FortiClientWindows from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.5%top 55.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | FortiClientWindows | 7.4.0 – through 7.4.37.2.0 – through 7.2.11 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C