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Vulnerabilities

CriticalKEVRansomware

CVE-2022-40684 — Fortinet Multiple Products Authentication Bypass Vulnerability

CVE-2022-40684 · Fortinet FortiOS, FortiProxy, FortiSwitchManager ·…

In brief

Severity · CVSS
Critical9.8CVSS 3.1, Critical
EPSS
100%
CISA KEV
Known exploited, listed since 11 Oct 2022
CERT-FR
No advisory or alert referenced in the catalog
Vendor
Fortinet
Published · Modified
·
Last verified

Summary

An authentication bypass using an alternate path or channel [CWE-288] in Fortinet FortiOS version 7.2.0 through 7.2.1 and 7.0.0 through 7.0.6, FortiProxy version 7.2.0 and version 7.0.0 through 7.0.6 and FortiSwitchManager version 7.2.0 and 7.0.0 allows an unauthenticated atttacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests.

Weakness: CWE-287

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

6 branches with a published fixed release

Fortinet FortiOS

Source: FG-IR-22-377

  1. 7.2
    Affected versions7.2.0 – 7.2.1
    First fixed release7.2.2
  2. 7.0
    Affected versions7.0.0 – 7.0.6(special below for FG6000F and 7000E models)
    First fixed release7.0.7
  3. 6.4
    Affected versionsNot affected
    First fixed release—
  4. 6.2
    Affected versionsNot affected
    First fixed release—

Fortinet FortiProxy

Source: FG-IR-22-377

  1. 7.2
    Affected versions7.2.0
    First fixed release7.2.1
  2. 7.0
    Affected versions7.0.0 – 7.0.6
    First fixed release7.0.7
  3. 2.0
    Affected versionsNot affected
    First fixed release—
  4. 1.2
    Affected versionsNot affected
    First fixed release—
  5. 1.1
    Affected versionsNot affected
    First fixed release—
  6. 1.0
    Affected versionsNot affected
    First fixed release—

Fortinet FortiSwitchManager

Source: FG-IR-22-377

  1. 7.2
    Affected versions7.2.0
    First fixed release7.2.1
  2. 7.0
    Affected versions7.0.0
    First fixed release7.0.1

Remediation

Fix available

Vendor fix

  • FortiOS 7.27.2.2
  • FortiOS 7.07.0.7
  • FortiProxy 7.27.2.1
  • FortiProxy 7.07.0.7
  • FortiSwitchManager 7.27.2.1
  • FortiSwitchManager 7.07.0.1

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

SourceFortiGuard FG-IR-22-377

CISA KEV required action

Apply updates per vendor instructions.

CISA due date:

SourceCISA KEV

Last verified 1 Oct 2026 at 09:29 UTC

Known exploitation

Added to CISA KEV on 11 Oct 2022

Federal remediation due date: 1 Nov 2022

Known use in ransomware campaigns

The CISA required action is shown under Remediation.

100% probability of exploitation in the next 30 days (percentile 100%).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CERT-FR

No CERT-FR advisory or alert of the last two years references this CVE, for the vendors Patcharo covers.

Timeline

  1. Added to CISA KEV
  2. Published by the source
  3. CISA remediation due date
  4. Source record last modified
  5. EPSS score computed
  6. Last verified by Patcharo

Official sources

References

Fortinet · CISA Known Exploited Vulnerabilities · NVD · FIRST EPSS · FortiGuard FG-IR-22-377

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

Read the methodologyRead the guide: FortiOS version numbering: branches, patch releases and the Feature and Mature labels