CVE-2026-25089

What is 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

Timeline

• 2026-06-09Published to the U.S. National Vulnerability Database (NVD)
• 2026-06-17First covered in a defend.network daily briefing
• 2026-07-16Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
• 2026-07-19CISA federal remediation deadline (BOD 22-01)
• 2026-07-23NVD record last updated

CISA Known Exploited Vulnerability

Fortinet FortiSandbox OS Command Injection Vulnerability

Affected product

Fortinet FortiSandbox

NVD also lists CPE entries for: Fortinet Fortisandbox, Fortinet Fortisandbox Cloud, Fortinet Fortisandbox Paas

References

• https://fortiguard.fortinet.com/psirt/FG-IR-26-141
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-25089
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• https://nvd.nist.gov/vuln/detail/CVE-2026-25089

Referenced in our briefings & reports

• Vulnerability Priority Report – Week 3 of July 2026 (July 20 – 26)
• Vulnerability Priority Report – Week 2 of July 2026 (July 13 – 19)
• Vulnerability Priority Report – Week 3 of June 2026 (June 15 – 21)
• Vulnerability Priority Report – Week 2 of June 2026 (June 8 – 14)
• WordPress, OpenSSL, Fortinet zero-days: patches shipped and KEV escalations (2026-07-18)
• Fortinet actively exploited; Rokarolla targets 217 banking apps; Google Vertex AI flaw (2026-06-17)