CVE-2026-40688

EUVD-2026-22808
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
fortinetCNA
7.2 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
fortinetfortiweb
8.0.0 ≤
𝑥
≤ 8.0.3
CNA
fortinetfortiweb
7.6.0 ≤
𝑥
≤ 7.6.6
CNA
fortinetfortiweb
7.4.0 ≤
𝑥
≤ 7.4.11
CNA
Common Weakness Enumeration
References
https://fortiguard.fortinet.com/psirt/FG-IR-26-127