CVE-2026-26035 PUBLISHED

Assigner: fortinet
Reserved: 10.02.2026 Published: 12.08.2026 Updated: 12.08.2026

An Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2.0 through 7.2.12, FortiWeb 7.0.0 through 7.0.12 may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CVSS Score: 8.8

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

CVSS 3.1

Product Status

Vendor	Fortinet
Product	FortiWeb
Versions	Default: unaffected affected from 8.0.0 to 8.0.2 (incl.) affected from 7.6.0 to 7.6.6 (incl.) affected from 7.4.0 to 7.4.11 (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 8.0.3 or above Upgrade to FortiWeb version 7.6.7 or above Upgrade to FortiWeb version 7.4.12 or above Upgrade to upcoming FortiWeb version 7.2.13 or above Upgrade to upcoming FortiWeb version 7.0.13 or above

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-158

Problem Types

Improper access control CWE