CVE-2025-53949: Fortinet FortiSandbox · Execute unauthorized code or commands
Affects Fortinet FortiSandboxSource CVE Database V5
Not known to be exploited · 17% EPSS · CVSS 7.0 High.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 17.1% chance of exploitation in 30 days – higher than 97% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 9 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Fortinet FortiSandbox | Affected
| Fixed in– |
AI-suggested
Organizations should immediately restrict administrative access to the FortiSandbox management interface to trusted personnel and networks only, employing network segmentation and strong access controls such as VPNs and multi-factor authentication. Monitor FortiSandbox logs for unusual HTTP request patterns or unauthorized command execution attempts. Fortinet should be contacted for official patches or updates addressing this vulnerability; applying these patches promptly once available is critical. Until patches are released, consider deploying compensating controls such as Web Application Firewalls (WAFs) to detect and block malicious HTTP requests targeting FortiSandbox. Regularly audit user accounts and privileges on FortiSandbox devices to ensure only necessary users have high-level access. Implement network intrusion detection systems (NIDS) to identify anomalous traffic patterns indicative of exploitation attempts. Finally, maintain up-to-date backups of FortiSandbox configurations and data to enable rapid recovery in case of compromise.
Description
An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an authenticated attacker to execute unauthorized code on the underlying system via crafted HTTP requests.