CVE-2026-40688
High
Description
An out-of-bounds write vulnerability [CWE-787] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow a remote privileged attacker to execute arbitrary code or command via crafted HTTP requests.
SeverityHigh
CVSS7.2
Exploit probability—
Product
Fortinet Fortiweb
PublishedApr 14, 2026
First seenApr 14, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- fortinet fortiweb7.4.12, 7.6.7, 8.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fortinet fortiweb | 7.4.0 ≤ v < 7.4.12, 7.6.0 ≤ v < 7.6.7, 8.0.0 ≤ v < 8.0.4 | 7.4.12, 7.6.7, 8.0.4 |
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