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VulnerabilityPublished Updated

CVE-2026-35616: Fortinet FortiClientEMS · Escalation of Privilege

Affects Fortinet FortiClientEMSSource CVE Database V5

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Exploited in the wild · KEV due 9 Apr 2026 · public exploit available · 93% EPSS · patch available : patch Fortinet FortiClientEMS now.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
EPSS
93.9% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available
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 evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 4 Apr 2026

  2. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  3. Exploited in the wild: evidence found.

    Listed in CISA KEV 2 days after disclosure

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Fortinet, Inc.

    , 49 minutes before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 22 minutes after disclosure

  4. , 2 days after disclosure

  5. KEV remediation due

    US federal deadline

    , 5 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

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

Affected software

ProductAffectedFixed in
FortinetFortiClientEMSAffected
  • >=7.4.5 <=7.4.6
Fixed in–

CPE configurations (2)

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

Check the firmware or software version for Fortinet FortiClientEMS in the device's admin interface against the vendor advisory.

Description

CVE-2026-35616 is a critical improper access control vulnerability in Fortinet FortiClientEMS versions 7.4.5 through 7.4.6. It allows an unauthenticated attacker to execute unauthorized code or commands via crafted requests. This vulnerability has a high CVSS score of 9.1 and is known to be exploited in the wild. An official fix is available to remediate this issue.

References

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