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cve recordcriticalexploited in the wild3 of 3 cataloguesexploit reported

CVE-2026-25089

Fortinet · FortiSandbox · Fortinet FortiSandbox OS Command Injection Vulnerability

Published · Added to CISA KEV
CVSS9.8
Severitycritical
WeaknessCWE-78
EPSS76.1%99.5th percentile
Exploited3 KEV sources
Ransomware useUnknown
Federal fix dueJul 19, 2026

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

patch window

Called exploited 6 days after disclosure.

Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listing6d
  3. Last KEV listing31d
  4. Last sighting22d

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources3 of 3
Listings differ by31 d
Strongest claimconfirmed

3 catalogues list it. CIRCL aggregates the others and is shown but not counted.

Public exploitation evidence

5 public reports collected from VulnCheck and CIRCL, first on Jun 15, 2026. Each links to its original source. We have not verified them.

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

Required action (CISA)

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.

References

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Our coverage of CVE-2026-25089

CVE-2008-4128high

July 2026 CVE Landscape

Cybersecurity researchers identified 85 high-impact vulnerabilities in July 2026 that require urgent remediation, marking a 44% increase from the previous month. Of these, 36 were assigned a "Very Critical" risk score by Insikt Group. The vulnerabilities affected products from 61 vendors, with Microsoft accounting for approximately 12% of the total.

CVE-2026-25089critical

CISA Adds Fortinet and Microsoft Flaws to Exploited Vulnerabilities List

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, requiring federal agencies to address them by July 19, 2026. The newly listed flaws include one affecting Microsoft SharePoint and two impacting Fortinet FortiSandbox products.