CVE-2026-25089
Confirmed PUBLISHEDA improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 5.0.0 through...
5 hours faster than CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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
- CVE Published
- Jun 09, 2026
- Exploitation Reported
- Jul 16, 2026
- CVSS
- 9.1 Critical
- EPSS
- 36.1%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Fortinet |
FortiSandbox
|
5.0.0 to <= 5.0.5 |
Affected |
| Fortinet |
FortiSandbox
|
4.4.0 to <= 4.4.8 |
Affected |
| Fortinet |
FortiSandbox
|
4.2.1 to <= 4.2.8 |
Affected |
| Fortinet |
FortiSandbox Cloud
|
5.0.4 to <= 5.0.5 |
Affected |
| Fortinet |
FortiSandbox PaaS
|
5.0.4 to <= 5.0.5 |
Affected |
CVE References
- https://fortiguard.fortinet.com/psirt/FG-IR-26-141 fortiguard.fortinet.com · CVE Record https://fortiguard.fortinet.com/psirt/FG-IR-26-141
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| All CISA Advisories First | 2026-07-16 12:00 UTC |
| CISA | 2026-07-16 17:00 UTC |
| CVE | 2026-07-16 17:51 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
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
Exploitation Status
Exploited in the wild
Recorded 2026-07-16 17:00:15 UTC · CISA
Proof of concept available
Recorded 2026-06-10 02:31:51 UTC · GitHub
Weaknesses (CWE)
-
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Recent Mentions
All CISA Advisories · Jul 16, 2026
CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-25089 Fortinet FortiSandbox OS Command Injection Vulnerability CVE-2026-39808 Fortinet FortiSandbox OS Command Injection Vulnerability CVE-2026-58644 Microsoft SharePoint Deserialization of Untrusted Data Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form. Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.
TheHackerNews · Jun 16, 2026
Bad actors are exploiting multiple security vulnerabilities in Fortinet FortiSandbox, according to threat intelligence firm Defused Cyber. In a post shared on X, the company said it has observed exploitation of CVE-2026-39813, CVE-2026-39808, and CVE-2026-25089 over the past 24 hours. CVE-2026-39813 (CVSS score: 9.1) refers to a path traversal vulnerability in FortiSandbox JRPC API that could
TheHackerNews · Jun 10, 2026
Fortinet, Ivanti, and SAP have released security updates to address multiple critical security vulnerabilities that could result in arbitrary code execution and information disclosure. The security flaw patched by Fortinet relates to a command injection vulnerability in FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS WEB UI. It's tracked as CVE-2026-25089 (CVSS score: 9.1). "An
Daily CyberSecurity · Jun 10, 2026
A critical security vulnerability tracks as CVE-2026-25089 inside the Fortinet ecosystem. This dangerous flaw scores a high 9.1 The post Critical FortiSandbox Flaw Requires Immediate Patching appeared first on Daily CyberSecurity. Related posts: High-Severity Cacti Flaw (CVE-2025-66399) Risks Remote Code Execution via SNMP Community String Injection Under Active Attack: Critical 9.1 CVSS FortiClient EMS Flaw Exploited in the Wild Critical 9.1 Flaws Hit Fortinet FortiSandbox
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2026-06-10 02:31:51 UTC · 0 stars
CVE-2026-25089 - Draft - Fortinet FortiSandbox
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
17:51 UTC 3 days ago17:51 UTC · 3 days ago
KEV confirmed by CVE
Exploitation attested by an external source
-
17:00 UTC 3 days ago17:00 UTC · 3 days ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
12:00 UTC 3 days ago12:00 UTC · 3 days ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
02:31 UTC about 1 month ago02:31 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
14:27 UTC about 1 month ago14:27 UTC · about 1 month ago
CVE published
Vulnerability disclosed publicly
-
09:27 UTC 6 months ago09:27 UTC · 6 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-25089
{
"cve_id": "CVE-2026-25089",
"title": "A improper neutralization of special elements used in an os command (\'os comm...",
"affected_vendor": "Fortinet",
"affected_product": "FortiSandbox, FortiSandbox Cloud, FortiSandbox PaaS",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.1,
"epss_score": 0.36135,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}