KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2022-42475

FortiProxy

Fortinet / FortiProxy · 7.2.0 to <= 7.2.1

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Severity
CVSS 9.3 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
99.5%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2022-42475 is an unauthenticated vulnerability affecting Fortinet FortiProxy, FortiOS. A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Fortinet / FortiProxy 7.2.0 to <= 7.2.1.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

FortiProxy

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

Vendor Product Affected Status
Fortinet FortiProxy Through 7.2.1 Affected
Fortinet FortiProxy Through 7.0.7 Affected
Fortinet FortiProxy Through 2.0.11 Affected
Fortinet FortiProxy Through 1.2.13 Affected
Fortinet FortiProxy Through 1.1.6 Affected
Fortinet FortiProxy Through 1.0.7 Affected
Fortinet FortiOS Through 7.2.2 Affected
Fortinet FortiOS Through 7.0.8 Affected
Fortinet FortiOS Through 6.4.10 Affected
Fortinet FortiOS Through 6.2.11 Affected
Fortinet FortiOS Through 6.0.15 Affected
Fortinet FortiOS Through 5.6.14 Affected
Fortinet FortiOS Through 5.4.13 Affected
Fortinet FortiOS Through 5.2.15 Affected
Fortinet FortiOS Through 5.0.14 Affected
Published
02 Jan 2023
Exploitation Reported
13 Dec 2022
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

ios ransomware nessus_scanner malware cisa edge

CVE References

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 13 Dec 2022

Independent exploitation attestation added to the KEV Intelligence record.

Used in malware

CISA

Recorded 13 Dec 2022

Malware families have been linked to exploitation of this CVE.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
CISA First 2022-12-13 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nessus https://www.tenable.com/plugins/nessus/168637 02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.3 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C

EPSS

99.5%

Weaknesses

Numeric Truncation Error CWE-197

Recent mention · Tenable Blog

CVE-2025-32756: Zero-Day Vulnerability in Multiple Fortinet Products Exploited in the Wild

Fortinet has observed threat actors exploiting CVE-2025-32756, a critical zero-day arbitrary code execution vulnerability which affects multiple Fortinet products including FortiVoice, FortiMail, FortiNDR, FortiRecorder and FortiCamera.BackgroundOn May 13th, Fortinet published...

Read full advisory

Timeline

From disclosure to observed exploitation

  1. Nessus plugin available

    Scanner coverage available

  2. CVE published

    Vulnerability disclosed publicly

  3. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  4. First public exploitation report

    Exploit observed in malware

  5. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2022-42475

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2022-42475",
  "confidence": "Confirmed",
  "cvss_score": 9.3,
  "cvss_estimated": false,
  "epss_score": 0.99474,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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