Is CVE-2026-25089 in the CISA KEV catalog?

Yes. CVE-2026-25089 is on the CISA Known Exploited Vulnerabilities list, added 2026-07-16.

What is the CVSS severity of CVE-2026-25089?

CVE-2026-25089 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2026-25089?

CVE-2026-25089 has an EPSS score of 36.13% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-25089?

Upgrade fortisandbox to 5.0.6 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2026-25089

CRITICALCISA KEVEPSS 98th pctl

9.8

CVSS v3

NVD

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

CWE-78OS Command Injection

How to fix

Remediation Available

fortisandboxNVD

Affected:>= 5.0.0, < 5.0.6Fixed in:5.0.6CVE-2026-25089derived from NVD

Affected:>= 4.4.0, < 4.4.9Fixed in:4.4.9CVE-2026-25089derived from NVD

fortisandbox cloudNVD

Affected:>= 5.0.4, < 5.0.6Fixed in:5.0.6CVE-2026-25089derived from NVD

fortisandbox paasNVD

Affected:>= 5.0.4, < 5.0.6Fixed in:5.0.6CVE-2026-25089derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

36.13%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-07-19

References

Vendor Advisory1

fortiguard.fortinet.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-17.