Fortinet FortiClient EMS Improper Access Control Vulnerability
- Severity
- Critical9.8CVSS 3.1, Critical
- EPSS
- 9%
- Published
- 4 Apr 2026
- Updated
- 24 Jul 2026
Description
Title, description and vendor guidance are quoted from the source records.
A improper access control vulnerability in Fortinet FortiClientEMS 7.4.5 through 7.4.6 may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.
Weakness: CWE-284
Known exploited
Added to CISA KEV on 6 Apr 2026
Federal remediation due date: 9 Apr 2026
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Exploit prediction
9% probability of exploitation in the next 30 days (percentile 95%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What the source states, per branch
Versions matched by Patcharo
Fortinet FortiClient EMSSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.4 | 7.4.5 – 7.4.6 | Fixed after 7.4.6 |
Versions not listed are stated unaffected by the vendor.
Workaround / Vendor remediation
Vendor remediation · FortiClient EMS
Upgrade to upcoming FortiClientEMS version 8.0.0 or above Upgrade to FortiClientEMS version 7.4.7 or above
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Fortinet (CVE record)
- Fortinet (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 27 Sept 2026, 23:42 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC