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CVE-2026-25089

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 5.0.0 th

Affects FortiSandbox 5.0.0 through 5.0.5, 4.4.0 through 4.4.8, and 4.2.1 through 4.2.8, plus FortiSandbox Cloud and PaaS 5.0.4 through 5.0.5, via the web UI. Fixed in 5.0.6.

Published
Last modified
published
Listed in CISA KEV
Actively exploited
Fix
Fixed in 5.0.6
None on Exploit-DB, Metasploit or GitHub

Summary

Fortinet FortiSandbox (including its cloud and PaaS versions) contains a flaw that lets an unauthenticated attacker run unauthorized operating system commands on the device. The attacker could do this by sending specially crafted web requests, potentially gaining control over the affected system.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

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

  1. CVE published
  2. Added to CISA KEV

    CISA has evidence of exploitation in the wild

  3. Record last updated
  4. CISA remediation deadline

    Due date for US federal agencies to patch

  5. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • Fortinet FortiSandbox

    From 5.0.0 · through 5.0.5; From 4.4.0 · through 4.4.8; From 4.2.1 · through 4.2.8

  • Fortinet FortiSandbox Cloud

    From 5.0.4 · through 5.0.5

  • Fortinet FortiSandbox PaaS

    From 5.0.4 · through 5.0.5

References 1

fortiguard.fortinet.com

FAQ

Questions about CVE-2026-25089

What does this mean?

The FortiSandbox web UI may let an unauthenticated attacker run unauthorized commands on the system through specially crafted HTTP requests.Source: fortiguard.fortinet.com

Am I affected, and how do I check?

Affected are FortiSandbox 5.0.0 through 5.0.5, 4.4.0 through 4.4.8, and 4.2.1 through 4.2.8, plus FortiSandbox Cloud and FortiSandbox PaaS 5.0.4 through 5.0.5. Compare the installed version against these ranges.Source: fortiguard.fortinet.com

What should I do about it?

Upgrade to FortiSandbox 5.0.6 or above.Source: fortiguard.fortinet.com

Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-07-16, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data