CVE-2026-40688
Received
Received - Intake
Out-of-Bounds Write in Fortinet FortiWeb Enables Code Execution
Publication date: 2026-04-14
Last updated on: 2026-04-20
Assigner: Fortinet, Inc.
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortiweb | From 7.6.0 (inc) to 7.6.7 (exc) |
| fortinet | fortiweb | From 8.0.0 (inc) to 8.0.4 (exc) |
| fortinet | fortiweb | From 7.4.0 (inc) to 7.4.12 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an out-of-bounds write issue found in Fortinet FortiWeb versions 7.4.0 through 7.4.11, 7.6.0 through 7.6.6, and 8.0.0 through 8.0.3. It may allow an attacker to execute unauthorized code or commands on the affected system.
How can this vulnerability impact me? :
The vulnerability can lead to unauthorized code or command execution, which may compromise the confidentiality, integrity, and availability of the affected system.
Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70