Security readout for executives and security teams
Plain-English summary
Fortinet FortiWAN versions before 4.5.9 have authenticated Web GUI command injection flaws. A user with high privileges could send crafted HTTP requests that cause operating system commands to run on the appliance, risking full confidentiality, integrity, and availability impact.
Executive priority
Prioritize remediation for FortiWAN management interfaces exposed beyond a tightly controlled admin network. The flaw requires authentication, but successful exploitation could compromise the appliance itself.
Technical view
CVE-2021-24009 is a network-reachable CWE-78 issue in FortiWAN Web GUI command handling. The CVSS 3.1 score is 7.2 with high privileges required, no user interaction, and high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to Fortinet FortiWAN deployments before 4.5.9 where an attacker can authenticate to the Web GUI. Risk increases if management access is internet-facing or reachable by many internal users.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS vector notes proof-of-concept exploit maturity, but high privileges are required before exploitation.
Researcher notes
Key constraints are FortiWAN before 4.5.9 and authenticated Web GUI access. Sources do not provide exploit details, affected configuration nuance, or evidence of active exploitation, so validation should focus on version, access paths, and privileged account exposure.
Mitigation direction
- Upgrade FortiWAN to version 4.5.9 or later per Fortinet guidance.
- Restrict Web GUI access to trusted management networks only.
- Review privileged FortiWAN accounts and remove unnecessary access.
- Check Fortinet PSIRT guidance for any additional product-specific actions.
Validation and detection
- Inventory FortiWAN appliances and confirm running versions.
- Verify no FortiWAN instance before 4.5.9 remains in production.
- Confirm Web GUI is not exposed to untrusted networks.
- Review appliance logs for unusual authenticated administrative Web GUI activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2021-24009 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.com/psirt/FG-IR-21-060CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.