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Vulnerability record · CVE-2026-126257 · published 11 November 2026

CVE-2026-126257: Hard-coded password vulnerability

A use of hard-coded password vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to bypass credential validation in certain circumstances outside of the attacker's control and gain unauthorized access.

9.0 CVSS 3.1 Critical CWE-259 · Hard-coded password Received
9.0CVSS 3.1 base score
-EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
11 Nov 2026Last modified by NVD

Description

A use of hard-coded password vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to bypass credential validation in certain circumstances outside of the attacker's control and gain unauthorized access.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://fortiguard.fortinet.com/psirt/FG-IR-26-271

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.3CVE-2026-20316Cisco Secure Firewall Management Center static credentials allow unauthenticated loginCisco Secure Firewall Management Center (FMC) Software contains hard-coded credentials for a low-privileged account in its web interface. An unauthen…KEVEPSS 35%analysed

Source: NIST National Vulnerability Database (record CVE-2026-126257), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.