Medium [CVE-2026-71408] UI DoS attack
This medium-severity Fortinet advisory covers CVE-2026-71408 affecting FortiOS.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
CVSSv3 Score:
5.0
An Allocation of Resources Without Limits or Throttling vulnerability [CWE-770] in FortiOS may allow an unauthenticated attacker to perform a slow HTTP DoS attack on the web interface via crafted HTTP requests.
Revised on 2026-08-12 00:00:00
- FortiOS FortiOS: 7.2 through 8.0 (vendor-listed versions)
Official advisory · high-confidence parse· fetched 24 days 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 24 days 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 24 days ago·verify at source
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