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CVE-2024-21755VulnerabilityPublished Updated

CVE-2024-21755: Fortinet FortiSandbox · Execute Unauthorized Code or Commands

Affects Fortinet FortiSandboxSource CVE Database V5

0

Not known to be exploited · CVSS 8.6 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
8.6High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.4% chance of exploitation in 30 days – higher than 84% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Apr 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Fortinet FortiSandboxAffected
  • =4.4.0
  • =4.2.1
  • =4.0.0
Fixed in–

AI-suggested

Organizations should immediately inventory their FortiSandbox deployments to identify affected versions. Although no official patches are currently listed, monitoring Fortinet advisories for updates is critical. In the interim, restrict network access to FortiSandbox management interfaces using network segmentation, firewalls, and VPNs to limit exposure. Implement strict access controls and multi-factor authentication for administrative accounts to reduce the risk of privilege abuse. Conduct thorough logging and monitoring of FortiSandbox activity to detect anomalous commands or access patterns. Consider deploying virtual patching or intrusion prevention system (IPS) rules to detect and block suspicious crafted requests targeting this vulnerability. Regularly review and update incident response plans to include scenarios involving FortiSandbox compromise. Finally, plan for rapid patch deployment once Fortinet releases official fixes.

Description

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.3, FortiSandbox 4.2.1 through 4.2.6, FortiSandbox 4.0.0 through 4.0.4 allows attacker to execute unauthorized code or commands via crafted requests..

References

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