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Vulnerability Intelligence

CVE-2026-25089

CriticalExploitedPublic exploit

A improper neutralization of special elements used in an os command ('os command injection') 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 Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS…

Published Jun 9, 2026 · Updated Jul 23, 2026

Key Facts

Patch immediately
  • CVE-2026-25089 is a critical-severity vulnerability (CVSS 9.1 v3.1) affecting Fortisandbox (Fortinet), Fortisandbox Cloud (Fortinet), Fortisandboxcloud (Fortinet) and 2 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 15, 2026. Public exploit code is available.
  • EPSS estimates a 76% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Fortisandbox 4.4.9, Fortisandbox 5.0.6, Fortisandbox Cloud 5.0.6.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.1

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

EPSS (30-day exploit likelihood)

76%

Higher than 99.5% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

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Description

A improper neutralization of special elements used in an os command ('os command injection') 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 Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVJul 16, 2026Jul 19, 2026Not reported
Industry KEV feedJun 15, 2026Jul 19, 2026Not reported
CIRCL KEVJul 16, 2026Jul 19, 2026Not reported
ENISA EUVDJul 16, 2026n/aNot reported

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Affected Products

30 affected entries in total
ProductAffected versionsFixed in
FortisandboxFortinet4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.84.2.8
Fortisandbox CloudFortinetSee advisory5.0.6
FortisandboxcloudFortinet5.0.4, 5.0.5n/a
Fortisandbox PaasFortinetSee advisory5.0.6
FortisandboxpaasFortinet5.0.4, 5.0.5n/a

Patched Releases

Fortisandbox

4.4.9, 5.0.6

Fortisandbox Cloud

5.0.6

Fortisandbox Paas

5.0.6

Timeline

  1. Publicly disclosed

    Jun 9, 2026

  2. Added to Industry KEV feed

    Jun 15, 2026

  3. Added to CISA KEV

    Jul 16, 2026

  4. Added to CIRCL KEV

    Jul 16, 2026

  5. Added to ENISA EUVD

    Jul 16, 2026

  6. Last updated

    Jul 23, 2026

Weakness Type

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

2 more references in the full CVE brief

FAQ

Common Questions.

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