Status: EPSS-IMMINENT
| Advisory ID: CVE-2026-40688
Key Details
| CVE | CVE-2026-40688 |
| CVSS Score / Version | 7.2 (High) / CVSS v3.1 |
| Updated | 2026-09-23 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is high; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | Fortinet FortiWeb |
| Classified as | CWE-787 (Out-of-bounds Write) |
| Exploitation prediction (EPSS) | 0.88% probability of exploitation in the next 30 days (57% percentile) -- FIRST.org's EPSS model. |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multi-sector |
What to Know
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.
What to Do
Monitor Fortinet's web page for any future patch releases. See vendor advisory link below.
References