9.8

CVE-2026-59836: fortinet forticlientems Improper Certificate Validation

CVSS: 9.8v3.1CriticalAnalyzed
Published 14-07-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-59836 is a critical (CVSS 9.8) Improper Certificate Validation vulnerability in fortinet forticlientems. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-07-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Fortinet1 product
  • forticlientems≥ 7.4.3, ≤ 7.4.5 | ≥ 7.4.0, ≤ 7.4.1 | ≥ 7.2.12, ≤ 7.2.14 | ≥ 7.2.0, ≤ 7.2.10 | ≥ 7.2.0, ≤ 7.4.1 | ≥ 7.4.3, < 7.4.6

1 vendor · 1 product

References

1 links