Exploit Public-Facing Fortinet FortiNAC CVE-2022-39952

name: Exploit Public-Facing Fortinet FortiNAC CVE-2022-39952
id: 2038f5c6-5aba-4221-8ae2-ca76e2ca8b97
version: 9
date: '2026-03-23'
author: Michael Haag, Splunk
status: production
type: TTP
description: |
    The following analytic detects attempts to exploit the Fortinet FortiNAC CVE-2022-39952 vulnerability. It identifies HTTP POST requests to the URI configWizard/keyUpload.jsp with a payload.zip file.
    The detection leverages the Web datamodel, analyzing fields such as URL, HTTP method, and user agent.
    This activity is significant as it indicates an attempt to exploit a known vulnerability, potentially leading to remote code execution.
    If confirmed malicious, attackers could gain control over the affected system, schedule malicious tasks, and establish persistent access via a remote command and control (C2) server.
data_source:
    - Palo Alto Network Threat
search: |-
    | tstats `security_content_summariesonly`
             count min(_time) as firstTime
                   max(_time) as lastTime

    FROM datamodel=Web WHERE

    Web.url IN ("*configWizard/keyUpload.jsp*")

    BY Web.http_user_agent Web.status
       Web.http_method Web.url Web.url_length
       Web.src Web.dest
    | `drop_dm_object_name("Web")`
    | `security_content_ctime(firstTime)`
    | `security_content_ctime(lastTime)`
    | `exploit_public_facing_fortinet_fortinac_cve_2022_39952_filter`
how_to_implement: |
    This detection requires the Web datamodel to be populated from a supported Technology Add-On like Splunk for Apache, Splunk for Nginx, or Splunk for Palo Alto.
known_false_positives: |
    False positives may be present. Modify the query as needed to POST, or add additional filtering (based on log source).
references:
    - https://github.com/horizon3ai/CVE-2022-39952
    - https://www.horizon3.ai/fortinet-fortinac-cve-2022-39952-deep-dive-and-iocs/
    - https://viz.greynoise.io/tag/fortinac-rce-attempt?days=30
drilldown_searches:
    - name: View the detection results for - "$dest$"
      search: '%original_detection_search% | search  dest = "$dest$"'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
    - name: View risk events for the last 7 days for - "$dest$"
      search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$") starthoursago=168  | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
rba:
    message: Potential CVE-2022-39952 against a Fortinet NAC may be occurring against $dest$.
    risk_objects:
        - field: dest
          type: system
          score: 50
    threat_objects: []
tags:
    analytic_story:
        - Fortinet FortiNAC CVE-2022-39952
        - Hellcat Ransomware
    asset_type: Network
    cve:
        - CVE-2022-39952
    mitre_attack_id:
        - T1190
        - T1133
    product:
        - Splunk Enterprise
        - Splunk Enterprise Security
        - Splunk Cloud
    security_domain: network
tests:
    - name: True Positive Test
      attack_data:
        - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1190/fortigate/web_fortinetnac.log
          source: not_applicable
          sourcetype: pan:threat