Is CVE-2026-39813 actively exploited?

CVE-2026-39813 has no public evidence of in-the-wild exploitation as of 2026-04-20.

What is the CVSS score for CVE-2026-39813?

CVE-2026-39813 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-39813?

Patch guidance is available from fortinet security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-39813.

Fix CVE-2026-39813 - CRITICAL fortinet fortisandbox

Q: Which products are affected by CVE-2026-39813?

2 products: fortinet fortisandbox, fortinet fortisandbox.

Description

A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via <insert attack vector here>

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-24

Metadata

Primary Vendor: FORTINET
Published: 4/14/2026
Last Modified: 4/20/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-39813

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary