CVE-2026-35616

Description

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.

Overview

State: PUBLISHED
Assigner (CNA): fortinet
CVSS severity: CRITICAL
CVSS score: 9.1 / 10
CVSS vector: 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
Effective score: 9.1 / 10 CRITICAL source: CNA overview
CWE(s): CWE-284
Reserved: 2026-04-03
Published: 2026-04-04 00:38 UTC
Last updated: 2026-04-21 08:35 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/35xxx/CVE-2026-35616.json
Linked Threat: CVE-2026-35616 — Fortinet FortiClient EMS: Fortinet FortiClient EMS Improper Access Control Vulnerability

CISA Known Exploited Vulnerabilities CISA KEV

CISA has confirmed in-the-wild exploitation of this CVE. Federal agencies must remediate by the due date below; private orgs should treat it as priority-1.

Vulnerability name: Fortinet FortiClient EMS Improper Access Control Vulnerability
Vendor / project: Fortinet
Product: FortiClient EMS
Date added to KEV: 2026-04-06
Remediation due: 2026-04-09
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.
Ransomware campaign use: Unknown
CISA notes: Please adhere to Fortinet's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-099 ; https://nvd.nist.gov/vuln/detail/CVE-2026-35616
CISA listing: www.cisa.gov/known-exploited-vulnerabilities-catalog

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-04-04 01:16:39 UTC
NVD last modified: 2026-04-06 18:12:57 UTC
NVD CVSS v3.1: 9.8 / 10 CRITICAL source: psirt@fortinet.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 3.9 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.4321 (probability of exploitation in next 30 days)
EPSS percentile: 97.55% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-18963
Assigner: fortinet
Published: Apr 4, 2026, 12:38:35 AM
Updated: Apr 21, 2026, 8:35:09 AM
EUVD base score (CVSS 3.1): 9.1 / 10
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
EUVD-reported EPSS: 41.1700
Vendors: Fortinet
Products: FortiClientEMS (7.4.5 ≤7.4.6)

ENISA description: 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.

EUVD references (1)

https://fortiguard.fortinet.com/psirt/FG-IR-26-099

Affected products (1)

Vendor	Product	Versions	Platforms
Fortinet	FortiClientEMS	`7.4.5` (affected)	—

Affected products — CPE 2.3 (2) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:a:fortinet:forticlientems:7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:forticlientems:7.4.6:*:*:*:*:*:*:*

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

https://fortiguard.fortinet.com/psirt/FG-IR-26-099

MITRE references (1) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://fortiguard.fortinet.com/psirt/FG-IR-26-099

Web references (9)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

http://docs.fortinet.com/document/forticlient/7.4.6/ems-release-notes/832484 rapid7:docs.fortinet.com
https://attackerkb.com/topics/CVE-2026-35616 rapid7:attackerkb.com
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-35616 rapid7:cve.mitre.org
https://docs.fortinet.com/document/forticlient/7.4.5/ems-release-notes/832484 rapid7:docs.fortinet.com
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-18963 rapid7:euvd.enisa.europa.eu
https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-35616 rapid7:services.nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-35616 rapid7:www.cve.org
http://cwe.mitre.org/data/definitions/284.html rapid7:cwe.mitre.org
https://www.fortiguard.com/psirt/FG-IR-26-099 rapid7:www.fortiguard.com

NVD-tagged references (2)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://fortiguard.fortinet.com/psirt/FG-IR-26-099 psirt@fortinet.com Vendor AdvisoryPatch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-35616 134c704f-9b21-4f2e-91b3-4a467353bcc0 US Government Resource

Indicators (2)

IOCs linked to the auto-promoted Threat row.

Type	Value	VirusTotal	Attached
cve	`CVE-2026-35616`	no local data	2026-05-14 02:58 UTC
cwe	`CWE-284`	no local data	2026-05-14 02:58 UTC

Remediations (9)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-14 11:16 UTC
CVE-2026-35616: Fortinet fixes actively exploited high-severity flaw

web:securityaffairs.com

Fortinet issued emergency patches for a critical FortiClient EMS flaw ( CVE-2026-35616 ) actively exploited in the wild.

2026-05-14 11:16 UTC
CVE-2026-35616: Fortinet FortiClientEMS improper access control ...

web:securityboulevard.com

Exploitation has been observed for CVE-2026-35616 , a critical improper access control zero-day vulnerability affecting Fortinet FortiClientEMS devices.Key takeaways:CVE- 2026 - 35616 , an improper access control vulnerability, has been exploited in the wild as a zero-day. Public exploit code has been identified and Fortinet products have a long history of targeting by malicious actors. Hotfixes ...

2026-05-14 11:16 UTC
Fortinet FortiClientEMS Vulnerability Exploited in the Wild (CVE-2026 ...

web:threatprotect.qualys.com

Tracked as CVE-2026-35616 , the vulnerability has a critical severity rating with a CVSS score of 9.1. Successful exploitation may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests. Simo Kohonen from Defused and Nguyen Duc Anh discovered and reported the vulnerability to Fortinet.

2026-05-14 11:16 UTC
CISA orders feds to patch exploited Fortinet EMS flaw by Friday

web:www.bleepingcomputer.com

On Monday, CISA added CVE-2026-35616 to its Known Exploited Vulnerabilities (KEV) Catalog and ordered Federal Civilian Executive Branch (FCEB) agencies to patch FortiClient EMS instances by ...

2026-05-14 11:16 UTC
Nvd - Cve-2026-35616

web:nvd.nist.gov

Secure .gov websites use HTTPS A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

2026-05-14 11:16 UTC
CVE-2026-35616: Fortinet FortiClientEMS RCE Vulnerability

web:www.sentinelone.com

CVE-2026-35616 is a remote code execution vulnerability in Fortinet FortiClientEMS. Learn about its impact, affected versions, and mitigation methods.

2026-05-14 11:16 UTC
CVE-2026-35616 Fortinet FortiClientEMS zero-day exploited

web:www.tenable.com

CVE-2026-35616 , an improper access control vulnerability, has been exploited in the wild as a zero-day. Public exploit code has been identified and Fortinet products have a long history of targeting by malicious actors.

2026-05-14 11:16 UTC
CISA Required Action

CISA KEV

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Due date: 2026-04-09 Known ransomware campaign use: Unknown

2026-05-14 01:13 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-35616.json.

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