How severe is CVE-2020-6640?

CVE-2020-6640 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-6640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6640?

CVE-2020-6640 affects Fortinet Fortianalyzer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-6640?

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

When was CVE-2020-6640 published?

CVE-2020-6640 was published on 2020-06-04 and last updated on 2026-06-17.

CVE-2020-6640

CVE-2020-6640 is a medium-severity vulnerability in Fortinet Fortianalyzer with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fortinet Fortianalyzer
Published: 2020-06-04
Last modified: 2026-06-17

Description

An improper neutralization of input vulnerability in the Admin Profile of FortiAnalyzer may allow a remote authenticated attacker to perform a stored cross site scripting attack (XSS) via the Description Area.

Frequently asked questions

What is CVE-2020-6640?: An improper neutralization of input vulnerability in the Admin Profile of FortiAnalyzer may allow a remote authenticated attacker to perform a stored cross site scripting attack (XSS) via the Description Area.
How severe is CVE-2020-6640?: CVE-2020-6640 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-6640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6640?: CVE-2020-6640 affects Fortinet Fortianalyzer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-6640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-6640 published?: CVE-2020-6640 was published on 2020-06-04 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-20-003

Affected products (1)

cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*

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