CVEs / CVE-2026-39813
CVE-2026-39813: Fortinet FortiSandbox vulnerability
- critical 9.8 CVSS 3.1 (from the CNA)
- EPSS 22.2% chance of exploitation in the next 30 days, higher than 97% of CVEs (30 Oct 2026)
- Last changed at its sources
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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 specially crafted HTTP requests.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Fortinet FortiSandbox | from 5.0.0, up to and including 5.0.5 | — |
| Fortinet FortiSandbox | from 4.4.0, up to and including 4.4.8 | — |
| Fortinet FortiSandbox Cloud | 24.1 | — |
| Fortinet FortiSandbox Cloud | 23.4 | — |
| Fortinet FortiSandbox Cloud | from 5.0.4, up to and including 5.0.5 | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-24 |
References
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.