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CVE-2026-35616

A improper access control vulnerability in Fortinet FortiClientEMS 7.4.5 through 7.4.6 may allow an unauthenticated attacker to execute…

Critical9.1Known exploitedPublic exploitEPSS 94.0%
Published
Updated
Reserved
Assigned by
fortinet

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.

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Fortinet FortiClient EMS Improper Access Control Vulnerability.

Added
6 Apr 2026
Fix due (US federal)
9 Apr 2026
Used by ransomware
Not known

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public exploit

An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.

Timeline

  1. ID reserved

    By fortinet

  2. · 1 day later

    Published

  3. · 2 days later

    Added to CISA KEV

    Known exploited in the wild

  4. · 3 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-35616, by who scored it
Scored byCVSSScoreVector
fortinetCNA (assigner)3.1Critical9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
NVDNVD · Analyzed3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
94.0% · top 0.2% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: active · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.

Weakness

Affected products

What to do

Solution: Upgrade to upcoming FortiClientEMS version 8.0.0 or above Upgrade to FortiClientEMS version 7.4.7 or above

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .