CVE-2026-26035

Remote Unauthenticated Login Through Random Credentials in Fortinet FortiWeb

Published Aug 12, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Description

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

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiWeb

unaffected

Version	Status	Constraints
`8.0.0`	affected	≤ 8.0.2
`7.6.0`	affected	≤ 7.6.6
`7.4.0`	affected	≤ 7.4.11
`7.2.0`	affected	≤ 7.2.12
`7.0.0`	affected	≤ 7.0.12

Configuration 1 [-]

OR	cpe:2.3:a:fortinet:fortiweb::::::::
	cpe:2.3:a:fortinet:fortiweb::::::::
	cpe:2.3:a:fortinet:fortiweb::::::::
	cpe:2.3:a:fortinet:fortiweb::::::::

No data.

Vendor Product Versions

Fortinet

Fortiweb

Version	Status	Scheme	Platform
`[8.0.0,8.0.2]`	affected	semver	—
`[7.6.0,7.6.6]`	affected	semver	—
`[7.4.0,7.4.11]`	affected	semver	—
`[7.2.0,7.2.12]`	affected	semver	—
`[7.0.0,7.0.12]`	affected	semver	—

Remediation

Vendor Solution

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

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.750% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

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

History

Sep 8, 2026 9:15 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:fortinet:fortiweb::::::::

Aug 13, 2026 1:00 AM Title updated View changes

Type	Values Removed	Values Added
Title		Remote Unauthenticated Login Through Random Credentials in Fortinet FortiWeb

Aug 12, 2026 3:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Aug 12, 2026 12:30 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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
First Time appeared		Fortinet Fortinet fortiweb
Weaknesses		CWE-287
CPEs		cpe:2.3:a:fortinet:fortiweb:7.0.0:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.10:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.11:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.12:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.1:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.2:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.3:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.4:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.5:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.6:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.7:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.8:::::::* cpe:2.3:a:fortinet:fortiweb:7.0.9:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.0:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.10:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.11:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.12:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.1:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.2:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.3:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.4:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.5:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.6:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.7:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.8:::::::* cpe:2.3:a:fortinet:fortiweb:7.2.9:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.0:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.10:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.11:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.1:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.2:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.3:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.4:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.5:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.6:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.7:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.8:::::::* cpe:2.3:a:fortinet:fortiweb:7.4.9:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.0:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.1:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.2:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.3:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.4:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.5:::::::* cpe:2.3:a:fortinet:fortiweb:7.6.6:::::::* cpe:2.3:a:fortinet:fortiweb:8.0.0:::::::* cpe:2.3:a:fortinet:fortiweb:8.0.1:::::::* cpe:2.3:a:fortinet:fortiweb:8.0.2:::::::*
Vendors & Products		Fortinet Fortinet fortiweb
References		https://fortiguard.fortinet.com/psirt/FG-IR-26-158
Metrics		cvssV3_1 `{'score': 8.8, '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'}`