CVE-2026-126257: Fortinet Authentication bypass
This Fortinet advisory covers CVE-2026-126257 in FortiAuthenticator.
- CVE-2026-126257
Key facts
- Vendor rating
- Critical, CVSS 9
- CISA KEV
- Not listed (catalogue checked )
- Affected
- FortiAuthenticator: 6.6.0 through 8.0.3 (vendor-listed versions)
- Advisory id
- FG-IR-26-271
- 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:
9.0
A Use of Hard-coded Password [CWE-259] vulnerability in FortiAuthenticator may allow an unauthenticated attacker to bypass credential validation in certain circumstances outside of the attacker's control and gain unauthorized access.
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-2026-126248Nov 10, 2026Insufficiently protected credentialsCVE-2026-126238Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126250Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126242Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126251Nov 10, 2026FortiAuthenticator improper access controlCVE-2026-126249Nov 10, 2026FortiAuthenticator privilege escalation
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