CVE-2026-39811
Received
Received - Intake
Integer Overflow in Fortinet FortiWeb Causes Denial of Service
Publication date: 2026-04-14
Last updated on: 2026-04-21
Assigner: Fortinet, Inc.
Description
Description
A integer overflow or wraparound vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow attacker to denial of service via <insert attack vector here>
CVSS Scores
EPSS Scores
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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 7.0.0 (inc) to 7.0.13 (inc) |
| fortinet | fortiweb | From 7.2.0 (inc) to 7.2.13 (inc) |
| fortinet | fortiweb | From 7.4.0 (inc) to 7.4.12 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
