How severe is CVE-2020-18664?

CVE-2020-18664 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-2020-18664 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-18664?

CVE-2020-18664 affects Webport Web Port. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-18664?

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

When was CVE-2020-18664 published?

CVE-2020-18664 was published on 2021-06-24 and last updated on 2026-06-17.

CVE-2020-18664

CVE-2020-18664 is a medium-severity vulnerability in Webport Web Port 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% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Webport Web Port
Published: 2021-06-24
Last modified: 2026-06-17

Description

Cross Site Scripting (XSS) vulnerability in WebPort <=1.19.1via the connection name parameter in type-conn.

Frequently asked questions

What is CVE-2020-18664?: Cross Site Scripting (XSS) vulnerability in WebPort <=1.19.1via the connection name parameter in type-conn.
How severe is CVE-2020-18664?: CVE-2020-18664 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-2020-18664 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-18664?: CVE-2020-18664 affects Webport Web Port. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-18664?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-18664 published?: CVE-2020-18664 was published on 2021-06-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webport:web_port:*:*:*:*:*:*:*:*

More vulnerabilities in Webport Web Port

CVE-2019-12461 — Medium (CVSS 6.1): Web Port 1.19.1 allows XSS via the /log type parameter.
CVE-2019-12460 — Medium (CVSS 6.1): Web Port 1.19.1 allows XSS via the /access/setup type parameter.
CVE-2020-18668 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerabililty in WebPort <=1.19.1 via the description parameter to script/listcalls.
CVE-2020-23659 — Medium (CVSS 5.4): WebPort-v1.19.17121 is affected by Cross Site Scripting (XSS) on the "connections" feature.
CVE-2020-18665 — Medium (CVSS 5.3): Directory Traversal vulnerability in WebPort <=1.19.1 in tags of system settings.

All CVEs affecting Webport Web Port →

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