CVE-2026-40688
CVSS Score
6.7
EPSS Score
0.4%
EPSS Percentile
63th
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.
| CWE | CWE-787 |
| Vendor | fortinet |
| Product | fortiweb |
| Ecosystems | |
| Industries | NetworkingSecurity |
| Published | Apr 14, 2026 |
| Last Updated | Apr 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Fortinet / FortiWeb
8.0.0 ≤ 8.0.3 7.6.0 ≤ 7.6.6 7.4.0 ≤ 7.4.11