CVE-2022-39952

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because EPSS predicts 94% probability of exploitation within the next 30 days (top 0.1% of all CVEs). NVD baseline CVSS 9.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 100%
CISA-KEV: Not listedEPSS: 100%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A external control of file name or path in Fortinet FortiNAC versions 9.4.0, 9.2.0 through 9.2.5, 9.1.0 through 9.1.7, 8.8.0 through 8.8.11, 8.7.0 through 8.7.6, 8.6.0 through 8.6.5, 8.5.0 through 8.5.4, 8.3.7 may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP request.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
100.0%
KEV
Not listed

Published

February 16, 2023

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jun 10, 2026
No patch confirmed yet.
generic

PSIRT | FortiGuard Labs

https://fortiguard.com/psirt/FG-IR-22-300

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 0× in last 7d / 0× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-06-15 17:46 UTCEPSS rescore
  2. 2026-06-10 13:20 UTCEPSS rescore
  3. 2026-06-02 20:11 UTCEPSS rescore
  4. 2026-06-02 20:11 UTCEPSS rescore
  5. 2026-06-01 13:50 UTCEPSS rescore
  6. 2026-06-01 13:50 UTCEPSS rescore
  7. 2026-05-31 22:29 UTCEPSS rescore
  8. 2026-05-31 22:29 UTCEPSS rescore
  9. 2026-05-31 22:29 UTCEPSS rescore
  10. 2026-05-29 13:43 UTCEPSS rescore
  11. 2026-05-29 13:43 UTCEPSS rescore
  12. 2026-05-26 13:43 UTCEPSS rescore
  13. 2026-05-26 13:43 UTCEPSS rescore
  14. 2026-05-26 07:17 UTCEPSS rescore
  15. 2026-05-26 07:17 UTCEPSS rescore
  16. 2026-05-26 07:17 UTCEPSS rescore
  17. 2026-05-25 06:36 UTCEG score recompute
  18. 2026-05-25 06:36 UTCGHSA enrichment
  19. 2026-05-24 19:12 UTCOSV refresh

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCChocapikk/CVE-2022-39952
    First seen Feb 26, 2023

    PoC for CVE-2022-39952 affecting Fortinet FortiNAC.

    Open source ↗
  • GitHub PoCshiyeshu/CVE-2022-39952_webshell
    First seen Feb 22, 2023

    Write Behinder_webshell to target using CVE-2022-39952

    Open source ↗
  • GitHub PoChorizon3ai/CVE-2022-39952
    First seen Feb 20, 2023

    POC for CVE-2022-39952

    Open source ↗
  • Metasploitexploit/linux/http/fortinac_keyupload_file_write✓ verified
    First seen Feb 16, 2023

    Fortinet FortiNAC keyUpload.jsp arbitrary file write

    Open source ↗
  • Nucleihttp/cves/2022/CVE-2022-39952.yaml
    First seen Jan 1, 2022

    Fortinet FortiNAC - Arbitrary File Write

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-39952?
CVE-2022-39952 is a critical vulnerability published on February 16, 2023. A external control of file name or path in Fortinet FortiNAC versions 9.4.0, 9.2.0 through 9.2.5, 9.1.0 through 9.1.7, 8.8.0 through 8.8.11, 8.7.0 through 8.7.6, 8.6.0 through 8.6.5, 8.5.0 through 8.5.4, 8.3.7 may allow an unauthenticated attacker to execute unauthorized code or commands via…
When was CVE-2022-39952 disclosed?
CVE-2022-39952 was first published in the National Vulnerability Database on February 16, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-39952 actively exploited?
CVE-2022-39952 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 100.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-39952?
CVE-2022-39952 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-39952?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-39952, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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