Exploited CVEs / Fortinet / CVE-2022-40684
CVE-2022-40684
Fortinet Multiple Products Authentication Bypass Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2022-11-01 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Fortinet PSIRT Advisories, linked below.
Actively exploited Fortinet Multiple Products vulnerability, Critical severity, CVSS 9.8. Added to the CISA KEV catalog 2022-10-11.
Risk summary
Updated July 26, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2022-40684
An authentication bypass across Fortinet FortiOS, FortiProxy, and FortiSwitchManager lets unauthenticated attackers run administrative operations via crafted HTTP requests, effectively logging into the firewall without credentials. Exploitation went industrial fast: the EPSS score is 100 percent, ransomware use is confirmed, and attackers added their own admin accounts and SSH keys to persist. CISA listed it in October 2022.
Do this: Patch affected Fortinet devices, remove management interfaces from the internet, and audit admin accounts and SSH keys for additions you did not make.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2022-40684
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2022-40684
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2022-11-01 (past due).
Apply updates per vendor instructions.
Official fix for CVE-2022-40684
The authoritative fix and affected-version list are published by the vendor. Find the Multiple Products advisory on Fortinet PSIRT Advisories.
Common questions about CVE-2022-40684
Is CVE-2022-40684 actively exploited?
Yes. CVE-2022-40684 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2022-10-11, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 100%. CISA also reports it is known to be used in ransomware campaigns.
What is the CISA deadline and required action for CVE-2022-40684?
CISA set the federal (BOD 22-01) remediation due date at 2022-11-01, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply updates per vendor instructions.
What fixes CVE-2022-40684?
The authoritative fix is in the vendor advisory: see Fortinet PSIRT Advisories for the patched Multiple Products versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2022-40684?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2022-40684's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
More exploited Fortinet CVEs
The newest Fortinet entries on the CISA KEV catalog:
All Fortinet exploited CVEs on one page: Fortinet vulnerabilities actively exploited.
Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
