Medium [CVE-2026-71408] allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service via <insert attack vector here>
This medium-severity Fortinet advisory covers CVE-2026-71408 affecting FortiOS.
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Summary
A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service
- FortiOS 7.6: 7.6.0 through 7.6.6
- FortiOS 7.4: 7.4 all versions
- FortiOS 7.2: 7.2 all versions
Official advisory · high-confidence parse· fetched 48 minutes ago·verify at source
- FortiOS 7.6: 7.6.7
- FortiOS 7.4: migrate to a fixed release
- FortiOS 7.2: migrate to a fixed release
Official advisory · high-confidence parse· fetched 48 minutes ago·verify at source
Mitigation checklist
- Upgrade per the Affected/Solution table: FortiOS 7.6: 7.6.7; FortiOS 7.4: migrate to a fixed release; FortiOS 7.2: migrate to a fixed release.
- As a mitigation measure, restrict administrator logins to trusted hosts only, limiting the hosts that can initiate an attack.
- Additionally, it is recommended to disable GUI access on Internet-facing interfaces.
- This incident is a regression from https://fortiguard.fortinet.com/psirt/FG-IR-19-013.
Official advisory · high-confidence parse· fetched 48 minutes ago·verify at source
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