CVE-2026-39808 (GCVE-0-2026-39808)

Vulnerability from cvelistv5 – Published: 2026-04-14 15:38 – Updated: 2026-04-22 13:56
VLAI KEVintel KEV
Summary
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>
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-78 - Execute unauthorized code or commands
Assigner
References
Impacted products
Vendor Product Version
Fortinet FortiSandbox Affected: 4.4.0 , ≤ 4.4.8 (semver)
    cpe:2.3:a:fortinet:fortisandbox:4.4.8:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandbox:4.4.0:*:*:*:*:*:*:*
 Create a notification for this product.
Fortinet FortiSandbox PaaS Affected: 23.4.4374
Affected: 23.4.4350
Affected: 23.3.4329
Affected: 23.1.4245
Affected: 22.2.4151
Affected: 22.2.4134
Affected: 22.1.4113
Affected: 21.4.4072
Affected: 21.3.4055
    cpe:2.3:a:fortinet:fortisandboxpaas:23.4.4374:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:23.4.4350:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:23.3.4329:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:23.1.4245:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:22.2.4151:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:22.2.4134:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:22.1.4113:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:21.4.4072:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortisandboxpaas:21.3.4055:*:*:*:*:*:*:*
 Create a notification for this product.
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f40990c2-c279-416a-8ef4-0fd46af15a9c

Vulnerability ID: CVE-2026-39808

Status: Confirmed

Status Updated: 2026-06-12 13:59 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-12
Asserted: 2026-06-12
Scope
Notes: KEVIntel entry: A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through... | Affected: Fortinet / FortiSandbox, FortiSandbox PaaS | CVSS: 9.8 (CRITICAL) | EPSS: 0.66168 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 4.4.0 through...
Vendor Fortinet
Product FortiSandbox, FortiSandbox PaaS
Added Date 2026-06-12T13:59:12.791Z
Cvss Score 9.8
Epss Score 0.66168
Cvss Severity CRITICAL
Epss Percentile 0.9918
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:45 UTC | Updated: 2026-06-19 12:45 UTC
Show details on NVD website
To clipboard 

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}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.