CVE-2026-40688
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 attacke
Severity
Medium 6.7
CVSS 3.1
Exploited
Not listed
EPSS
0.064
93.0th percentile
Discovered by
Not disclosed
Published
Apr 14, 2026
Assigned by fortinet
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.
Weakness: CWE-787
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Fortinet | FortiWeb | Web & Application Security | cna-assigner |
Vendor-reported affected versions (1)
- Fortinet · FortiWeb
Vendor remediation
Upgrade to FortiWeb version 8.0.4 or above Upgrade to FortiWeb version 7.6.7 or above Upgrade to FortiWeb version 7.4.12 or above