What is CVE-2026-71408?

CVE-2026-71408 is a medium-severity vulnerability in Fortinet Fortios, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-08-12.

How severe is CVE-2026-71408?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Fortinet Fortios

CVE-2026-71408

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 via <insert attack vector here>

Published 2026-08-12 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (31.9th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.004 · change: -0.002

Affected products

Fortinet Fortios — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

fortiguard.fortinet.com/psirt/FG-IR-26-162 (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-71408?: CVE-2026-71408 is a medium-severity vulnerability in Fortinet Fortios, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-08-12.
How severe is CVE-2026-71408?: Medium severity. CVSS v3 base score is 5.3 out of 10.