CVE-2026-39811

Published: Apr 14, 2026Modified: Jun 17, 2026

4.9

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.2 / Impact: 3.6

Source: psirt@fortinet.com (Secondary)

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>

Affected (5)

Products: Fortinet: Fortiweb

Fortinet

1 product

Fortiweb

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Fortinet Fortiweb	From 7.0.0 to 7.0.13
Fortinet Fortiweb	From 7.2.0 to 7.2.13
Fortinet Fortiweb	From 7.4.0 to 7.4.12
Fortinet Fortiweb	From 7.6.0 to 7.6.7
Fortinet Fortiweb	From 8.0.0 to 8.0.4

Related CWEs

CWE-190

Integer Overflow or Wraparound

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.

References (1)

https://fortiguard.fortinet.com/psirt/FG-IR-26-108

Source: psirt@fortinet.com

Vendor Advisory

Timeline

No history available yet.