—–BEGIN PGP SIGNED MESSAGE—–

Hash: SHA256

Improper Access Control Vulnerability in FortiClient (EMS)

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

FortiClient EMS 7.4.0 through to 7.4.6

Overview

A vulnerability has been reported in FortiClient EMS which could allow an unauthenticated attacker to execute arbitrary code with specially crafted requests on the affected system.

Target Audience:

All organizations and individuals using FortiClient EMS deployments.

Risk Assessment:

High risk of Unauthorized command execution, data loss, or full system compromise.

Impact Assessment:

High potential of remote code execution and system compromise.

Description

FortiClient Endpoint Management Server (EMS) is used to centrally manage FortiClient endpoint security deployments within an organization.

The vulnerability exists in FortiClient (EMS) due to an improper access control that allows unauthenticated attacker to bypass authentication and authorization. An attacker could exploit this vulnerability via specially crafted requests.

Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code on the affected system.

Note: This vulnerability (CVE-2026-35616) is being exploited in the wild. Users are strongly advised to apply the latest patches immediately.

Solution

Apply appropriate updates as mentioned by the vendor:

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

Vendor Information

Fortinet

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

References

Fortinet

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

Bleeping Computer

https://www.bleepingcomputer.com/news/security/new-fortinet-forticlient-ems-flaw-cve-2026-35616-exploited-in-attacks/

CVE Name

CVE-2026-35616

– —

Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

—–BEGIN PGP SIGNATURE—–

iQIzBAEBCAAdFiEE6r4Iam/Ey0c/KakL3jCgcSdcys8FAmnVIPQACgkQ3jCgcSdc

ys+A6Q/+Nzfp8Hqj9OXmpZtCDG3Kw6XzT2D5PiAkERf1HMO/24cC7Dl0hTvW010y

gZP8WF3v3A8VHOwc7TvF42wbr+FCkhFleSIaUysjZW2R3a8OYVXDYeDFaai4auEE

sic/p63xTeWMFPJsOCYCLhkAvbJmAR3Agxqr05vVW+F0J5YY6p2umsJiQby16AOj

ByUjOCWWq+5J0TCvP0gBTOVvkqXqczotMRcD0VuQycbLkn4vxVXe6UwwcEAUPmm6

nsQ9Pp0sC1g74pyQwuT/yzhyw8ZdA6Dy6PVVNTfvaLw3eVy9C5KMLgeqnEtBljMJ

uO7xHB18PLOMtZQDEDMTW66K0RB2GANRFg0es7Bwc13wJJQzVQYlQeKMLoeA2y4B

0NHkQkFJxAbcHWVjcgUaBMz25M49+XCTFv/Jm2rXMg2OAQoiptccjeWPTfzXLpim

j5hnvulqqc6l10V7G3wYUymXV9OGPhUt+C1CWdHFrbXt/1kSGUu4E57k1MdVuJOZ

9d1eW0nytMjtdqo+n4SOuKt1gHoAiBPPgbcRjPyiBagBC9Eyy7bEkiAhDsoPLBu+

9fz86FS5rG1vEqrenU4BtBjKZFb9H4NrVtXA6xiNoDmG9zKFCTBIbVUIsnuzM4KI

TShFQv2iRXplfaVmeDcJoq56jkFEPZ0vsvwcy8A+1k9ICp6Iplw=

=8v4F

—–END PGP SIGNATURE—–