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CVE-2022-40684

Fortinet Multiple Products Authentication Bypass

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 100.0%
  1. Published18 Oct 2022
  2. Added to CISA KEV11 Oct 2022
  3. Remediation due1 Nov 2022
Actively exploited (CISA KEV)

Fortinet FortiOS, FortiProxy, and FortiSwitchManager contain an authentication bypass vulnerability that could allow an unauthenticated attacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests.

Added to KEV: 11 Oct 2022Federal remediation due: 1 Nov 2022Used in ransomware

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Fortinet FortiProxy≥ 7.0.0 < 7.0.7 · 7.2.0
Fortinet Fortiswitchmanager7.0.0 · 7.2.0
Fortinet FortiOS≥ 7.0.0 < 7.0.7 · ≥ 7.2.0 < 7.2.2

Remediation

Fixed in
Fortinet FortiProxy≥ 7.0.7
Fortinet FortiOS≥ 7.0.7

References

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Frequently asked

Is CVE-2022-40684 being actively exploited?

Yes. CVE-2022-40684 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 11 Oct 2022. It has been used in ransomware campaigns.

How severe is CVE-2022-40684?

CVE-2022-40684 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2022-40684?

Affected products include Fortinet FortiProxy, Fortinet Fortiswitchmanager, Fortinet FortiOS.

How do I fix CVE-2022-40684?

Upgrade affected software to a fixed version, for example Fortinet FortiProxy 7.0.7, Fortinet FortiOS 7.0.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-40684 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.