CVE-2026-126242 and CVE-2026-126243: Fortinet FortiAuthenticator improper access control
This Fortinet advisory covers CVE-2026-126242 and CVE-2026-126243 in FortiAuthenticator. Its rating, versions and guidance apply to the bulletin as a whole, not to each of its 2 CVEs.
Key facts
- Bulletin rating
- High, CVSS 7.4
- Affected
- FortiAuthenticator: 6.6.0 through 8.0.3 (vendor-listed versions)
- Advisory id
- FG-IR-26-257
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
CVSSv3 Score:
7.4
An Incorrect Authorization vulnerability [CWE-863] in FortiAuthenticator may allow an attacker to bypass authentication and gain unauthorized access. Full impersonation however requires the attacker to obtain pre-required id and data via other means.
Revised on 2026-11-10 00:00:00
Text from the source record.
- FortiAuthenticator: 6.6.0 through 8.0.3 (vendor-listed versions)
Official advisory · high-confidence parse· fetched ·verify at source
More Fortinet advisories
CVE-2026-126257Nov 10, 2026Authentication bypassCVE-2026-126248Nov 10, 2026Insufficiently protected credentialsCVE-2026-126238Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126250Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126251Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126249Nov 10, 2026FortiAuthenticator privilege escalation
Get an email when Fortinet publishes the next one.
See Fortinet's last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).
iPhone and Android apps · New on the App Store
Monitor future Fortinet CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
