How severe is CVE-2020-15940?

CVE-2020-15940 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-15940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15940?

CVE-2020-15940 affects Fortinet Forticlient Enterprise Management Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15940?

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

When was CVE-2020-15940 published?

CVE-2020-15940 was published on 2021-11-02 and last updated on 2026-06-17.

CVE-2020-15940

CVE-2020-15940 is a medium-severity vulnerability in Fortinet Forticlient Enterprise Management Server with a CVSS 3.x base score of 4.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
CVSS v2: 3.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fortinet Forticlient Enterprise Management Server
Published: 2021-11-02
Last modified: 2026-06-17

Description

An improper neutralization of input vulnerability [CWE-79] in FortiClientEMS versions 6.4.1 and below and 6.2.9 and below may allow a remote authenticated attacker to inject malicious script/tags via the name parameter of various sections of the server.

Frequently asked questions

What is CVE-2020-15940?: An improper neutralization of input vulnerability [CWE-79] in FortiClientEMS versions 6.4.1 and below and 6.2.9 and below may allow a remote authenticated attacker to inject malicious script/tags via the name parameter of various sections of the server.
How severe is CVE-2020-15940?: CVE-2020-15940 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-15940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15940?: CVE-2020-15940 affects Fortinet Forticlient Enterprise Management Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-15940 published?: CVE-2020-15940 was published on 2021-11-02 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-20-067

Affected products (1)

cpe:2.3:a:fortinet:forticlient_enterprise_management_server:*:*:*:*:*:*:*:*

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