How severe is CVE-2020-21854?

CVE-2020-21854 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-21854 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-21854?

CVE-2020-21854 affects Tidesec Wdscanner. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-21854?

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

When was CVE-2020-21854 published?

CVE-2020-21854 was published on 2021-07-30 and last updated on 2026-06-17.

CVE-2020-21854

CVE-2020-21854 is a medium-severity vulnerability in Tidesec Wdscanner with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Tidesec Wdscanner
Published: 2021-07-30
Last modified: 2026-06-17

Description

Cross Site Scripting vulnerabiity exists in WDScanner 1.1 in the system management page.

Frequently asked questions

What is CVE-2020-21854?: Cross Site Scripting vulnerabiity exists in WDScanner 1.1 in the system management page.
How severe is CVE-2020-21854?: CVE-2020-21854 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-21854 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-21854?: CVE-2020-21854 affects Tidesec Wdscanner. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-21854?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-21854 published?: CVE-2020-21854 was published on 2021-07-30 and last updated on 2026-06-17.

References

https://github.com/TideSec/WDScanner/issues/41

Affected products (1)

cpe:2.3:a:tidesec:wdscanner:1.1:*:*:*:*:*:*:*

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