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CVE-2026-39808

CRITICALCVSS 9.8/10EPSS 48.67%

Last modified

CVE-2026-39808 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.8 may allow attacker to execute unauthorized code or commands via <insert attack vector here>. EPSS estimates a 48.67% chance of exploitation in the next 30 days.

Description

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.8 may allow attacker to execute unauthorized code or commands via <insert attack vector here>

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
48.67%

98.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FortinetFortisandbox>= 4.4.0, <= 4.4.9

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2026-39808?
A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.8 may allow attacker to execute unauthorized code or commands via <insert attack vector here>
How severe is CVE-2026-39808?
CVE-2026-39808 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 48.67% probability of exploitation in the next 30 days.
How do I fix CVE-2026-39808?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-39808?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST