FortiSandbox
CVE-2026-39813: '../filedir' in FortiSandbox, FortiSandbox Cloud
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.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.1
EPSS0.72%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiSandbox 5.0.0 to 5.0.5 | 5.0.6 or later |
| FortiSandbox 4.4.0 to 4.4.8 | 4.4.9 or later |
| FortiSandbox Cloud 24.1 | See the advisory |
| FortiSandbox Cloud 23.4 | See the advisory |
| FortiSandbox Cloud 5.0.4 to 5.0.5 | Upgrade past 5.0.5; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.