CVE-2022-39952Public exploitNetwork attack vector

Unauthenticated root code execution via unsafe archive extraction

Published Feb 16, 2023 · Updated Oct 23, 2024

External file-path control in Fortinet FortiNAC 9.4.0 allows remote attackers to execute code via a crafted HTTP request. The unauthenticated keyUpload.jsp endpoint stores the attacker-supplied key archive as config.applianceKey, then configApplianceXml changes to the filesystem root and unzips it, allowing archive entries to overwrite arbitrary files. No credentials or user interaction are required; affected releases are 8.3.7, 8.5.0 through 8.5.4, 8.6.0 through 8.6.5, 8.7.0 through 8.7.6, 8.8.0 through 8.8.11, 9.1.0 through 9.1.7, 9.2.0 through 9.2.5, and 9.4.0, and a cron-file write yields root command execution.

CVSS severity9.8
Critical
EPSS probability99.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

External file-path control in Fortinet FortiNAC 9.4.0 allows remote attackers to execute code via a crafted HTTP request. The unauthenticated keyUpload.jsp endpoint stores the attacker-supplied key archive as config.applianceKey, then configApplianceXml changes to the filesystem root and unzips it, allowing archive entries to overwrite arbitrary files. No credentials or user interaction are required; affected releases are 8.3.7, 8.5.0 through 8.5.4, 8.6.0 through 8.6.5, 8.7.0 through 8.7.6, 8.8.0 through 8.8.11, 9.1.0 through 9.1.7, 9.2.0 through 9.2.5, and 9.4.0, and a cron-file write yields root command execution.

The record

CVE
CVE-2022-39952
Published
Feb 16, 2023
Updated
Oct 23, 2024
Vendor
Fortinet
Product
FortiNAC
Classifications
CWE-73, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.3.7
  2. Affected versionversion=8.5.0 <=8.5.4
  3. Affected versionversion=8.6.0 <=8.6.5
  4. Affected versionversion=8.7.0 <=8.7.6
  5. Affected versionversion=8.8.0 <=8.8.11
  6. Affected versionversion=9.1.0 <=9.1.7
  7. Affected versionversion=9.2.0 <=9.2.5
  8. Affected versionversion=9.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiNACversion=8.3.7; version=8.5.0 <=8.5.4; version=8.6.0 <=8.6.5; version=8.7.0 <=8.7.6; version=8.8.0 <=8.8.11; version=9.1.0 <=9.1.7; version=9.2.0 <=9.2.5; version=9.4.0

Published CVSS scores

9.8FortinetCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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