How severe is CVE-2026-39809?

CVE-2026-39809 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-39809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-39809?

CVE-2026-39809 affects Fortinet Forticlientems. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-39809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-39809 have an EU (EUVD) identifier?

Yes. CVE-2026-39809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22307.

When was CVE-2026-39809 published?

CVE-2026-39809 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-39809

CVE-2026-39809 is a medium-severity vulnerability in Fortinet Forticlientems with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22307
Weakness: CWE-89
Affected product: Fortinet Forticlientems
Published: 2026-04-14
Last modified: 2026-06-17

Description

A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiClientEMS 7.4.0 through 7.4.5, FortiClientEMS 7.2.0 through 7.2.12, FortiClientEMS 7.0 all versions may allow attacker to execute unauthorized code or commands via sending crafted requests

Frequently asked questions

What is CVE-2026-39809?: A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiClientEMS 7.4.0 through 7.4.5, FortiClientEMS 7.2.0 through 7.2.12, FortiClientEMS 7.0 all versions may allow attacker to execute unauthorized code or commands via sending crafted requests
How severe is CVE-2026-39809?: CVE-2026-39809 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-39809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-39809?: CVE-2026-39809 affects Fortinet Forticlientems. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-39809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-39809 have an EU (EUVD) identifier?: Yes. CVE-2026-39809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22307.
When was CVE-2026-39809 published?: CVE-2026-39809 was published on 2026-04-14 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-102

Affected products (1)

cpe:2.3:a:fortinet:forticlientems:*:*:*:*:*:*:*:*

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