CVE-2026-126237 · Vendor
NO FIX YET · SEE WHAT TO DO
FortiAuthenticator versions 8.0.0 through 8.0.3 and 6.6.0 through 6.6.10 contain an infinite loop that crafted TCP requests can trigger. An attacker can use this to cause a denial of service.
first public Nov 11, 2026 · 1 source
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FortiAuthenticator appliances in the affected version ranges that accept TCP traffic from the network are exposed. Sources do not say whether a default configuration or a specific service must be enabled. Teams running other Fortinet products or versions outside these ranges can skip it.
Not affected if unaffected-version
Who cares fortiauthenticator, fortinet, self-hosted
get system status on the appliance.8.0.0 through 8.0.3 and 6.6.0 through 6.6.10.A loop with unreachable exit condition ('infinite loop') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to cause a denial of service via crafted TCP requests.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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