CVE-2026-39811 PUBLISHED

Assigner: fortinet
Reserved: 07.04.2026 Published: 14.04.2026 Updated: 14.04.2026

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>

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CVSS Score: 4.4

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	High	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Fortinet
Product	FortiWeb
Versions	Default: unaffected affected from 8.0.0 to 8.0.3 (incl.) affected from 7.6.0 to 7.6.6 (incl.) affected from 7.4.0 to 7.4.12 (incl.) affected from 7.2.0 to 7.2.12 (incl.) affected from 7.0.0 to 7.0.12 (incl.)

Solutions

Upgrade to FortiWeb version 8.0.4 or above Upgrade to FortiWeb version 7.6.7 or above

References

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

Problem Types

Denial of service CWE