CVE-2026-39812: Fortinet FortiSandbox · Execute Unauthorized Code or Commands
Affects Fortinet FortiSandboxSource CVE Database V5
Public exploit available · CVSS 4.3 Medium · patch available : patch Fortinet FortiSandbox as a priority.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 14 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FortinetFortiSandbox | Affected
| Fixed in– |
| FortinetFortiSandbox PaaS | Affected
| Fixed in– |
CPE configurations (45)
cpe:2.3:a:fortinet:fortisandbox:5.0.4:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisandbox:5.0.3:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisandbox:5.0.2:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisandbox:5.0.1:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisandbox:5.0.0:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisandbox:4.4.8:*:*:*:*:*:*:*
AI-suggested
An official patch is available from Fortinet to remediate this vulnerability. Users of affected FortiSandbox versions should apply the vendor-provided updates promptly to mitigate the risk. Since this is not a cloud service, remediation depends on customer action to deploy the fix.
Description
A improper neutralization of input during web page generation ('cross-site scripting') 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 PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>