High severity7.5NVD Advisory· Published Nov 11, 2026

CVE-2026-126239

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Fortinet/Fortifabric Coreinferred
Range: >=8.0.0,<8.0.4
Fortinet/Fortiauthenticatorllm-fuzzy
Range: 8.0.0 through 8.0.3, 6.6.0 through 6.6.10

Patches

Vulnerability mechanics

References

fortiguard.fortinet.com/psirt/FG-IR-26-254nvd

News mentions

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