CVE-2026-40688
Last modified
CVE-2026-40688 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. EPSS estimates a 6.44% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortiweb | >= 7.4.0, < 7.4.12 |
| Fortinet | Fortiweb | >= 7.6.0, < 7.6.7 |
| Fortinet | Fortiweb | >= 8.0.0, < 8.0.4 |
References
- https://fortiguard.fortinet.com/psirt/FG-IR-26-127Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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