CVE-2026-126239

HighCVSS 7.5/10Last modified Nov 12, 2026

Description

A stack-based buffer overflow 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 crash the FSSO subsystem via crafted http requests

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-121

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
FortinetFortiAuthenticator>= 8.0.0, <= 8.0.3; >= 6.6.0, <= 6.6.10

References

Timeline

Published
Nov 11, 2026
Last modified
Nov 12, 2026
NVD status
Awaiting Analysis

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CVE-2026-126239: High severity, CVSS 7.5 | Vulnix