SECURELYN
Free ScanFree consultation

CVE-2026-25089

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests

Scores

9.8
CVSS 9.8 out of 10, critical severity.
76.1%
EPSS 76.1% chance of exploitation in the next 30 days.

The facts

Published
9 June 2026
Last changed
23 July 2026
NVD status
Analyzed
Severity
Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
Affects
  • fortinet fortisandbox
  • fortinet fortisandbox cloud
  • fortinet fortisandbox paas
Known exploited
Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 16 July 2026.
EPSS
76.1% chance of exploitation activity in the next 30 days (percentile 100).

Is there a Securelyn advisory?

Not yet. Securelyn writes plain-English advisories for the flaws that matter most to businesses. Subscribe to the digest to hear about them.

References