CVE-2026-26035CWE-287

CVE-2026-26035

Critical · published August 12, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
54.4
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00750 · 54.4th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-08-12T17:17Z
Affected products (4)
ProductVersionsFixed in
fortinet/fortiweb≥ 7.2.0, < 7.2.137.2.13
fortinet/fortiweb≥ 7.4.0, < 7.4.127.4.12
fortinet/fortiweb≥ 7.6.0, < 7.6.77.6.7
fortinet/fortiweb≥ 8.0.0, < 8.0.38.0.3
References (1)
https://fortiguard.fortinet.com/psirt/FG-IR-26-158 · [email protected]
EPSS history
Timeline
  • 12 AUG 12:19Z
    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…
    cvelistv5