How severe is CVE-2021-42121?

CVE-2021-42121 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-42121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42121?

CVE-2021-42121 affects Businessdnasolutions Topease. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42121?

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

When was CVE-2021-42121 published?

CVE-2021-42121 was published on 2021-11-30 and last updated on 2026-06-17.

CVE-2021-42121

CVE-2021-42121 is a medium-severity vulnerability in Businessdnasolutions Topease with a CVSS 3.x base score of 4.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Businessdnasolutions Topease
Published: 2021-11-30
Last modified: 2026-06-17

Description

Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on an object’s date attribute(s) allows an authenticated remote attacker with Object Modification privileges to insert an unexpected format into date fields, which leads to breaking the object page that the date field is present.

Frequently asked questions

What is CVE-2021-42121?: Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on an object’s date attribute(s) allows an authenticated remote attacker with Object Modification privileges to insert an unexpected format into date fields, which leads to breaking the object page that the date field is present.
How severe is CVE-2021-42121?: CVE-2021-42121 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-42121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42121?: CVE-2021-42121 affects Businessdnasolutions Topease. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42121 published?: CVE-2021-42121 was published on 2021-11-30 and last updated on 2026-06-17.

References

https://confluence.topease.ch/confluence/display/DOC/Release+Notes

Affected products (1)

cpe:2.3:a:businessdnasolutions:topease:*:*:*:*:*:*:*:*

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CVE-2021-42120 — Medium (CVSS 6.5): Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform…

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