Critical severity · published Jul 14, 2026
CVE-2026-59836
A improper certificate validation vulnerability in Fortinet FortiClientEMS 7.4.3 through 7.4.5, FortiClientEMS 7.4.0 through 7.4.1, FortiClientEMS 7.2 all versions may allow…
9.8
CVSS
0.2%
EPSS
No
On KEV
Description
A improper certificate validation vulnerability in Fortinet FortiClientEMS 7.4.3 through 7.4.5, FortiClientEMS 7.4.0 through 7.4.1, FortiClientEMS 7.2 all versions may allow attacker to information disclosure via <insert attack vector here>
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiClientEMS · Fortinet
7.4.3 through 7.4.5; 7.4.0 through 7.4.1; 7.2.12 through 7.2.14; 7.2.0 through 7.2.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59836
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59836
Vendor Advisory
https://fortiguard.fortinet.com/psirt/FG-IR-26-147
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