How severe is CVE-2021-42117?

CVE-2021-42117 has a CVSS 3.x base score of 3.5, rated low 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-2021-42117 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-2021-42117?

CVE-2021-42117 affects Businessdnasolutions Topease. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42117?

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

When was CVE-2021-42117 published?

CVE-2021-42117 was published on 2021-11-30 and last updated on 2026-06-17.

CVE-2021-42117

CVE-2021-42117 is a low-severity vulnerability in Businessdnasolutions Topease with a CVSS 3.x base score of 3.5. 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: Low (CVSS 3.x base score 3.5)
CVSS v2: 3.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
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 allows an authenticated remote attacker with Object Modification privileges to insert arbitrary HTML without code execution.

Frequently asked questions

What is CVE-2021-42117?: Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 allows an authenticated remote attacker with Object Modification privileges to insert arbitrary HTML without code execution.
How severe is CVE-2021-42117?: CVE-2021-42117 has a CVSS 3.x base score of 3.5, rated low 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-2021-42117 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-2021-42117?: CVE-2021-42117 affects Businessdnasolutions Topease. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42117?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42117 published?: CVE-2021-42117 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:*:*:*:*:*:*:*:*

More vulnerabilities in Businessdnasolutions Topease

CVE-2021-42118 — High (CVSS 8.1): Persistent Cross Site Scripting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform…
CVE-2021-42115 — High (CVSS 8.1): Missing HTTPOnly flag in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <=…
CVE-2021-42544 — High (CVSS 7.5): Missing Rate Limiting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <=…
CVE-2021-42123 — High (CVSS 7.3): Unrestricted File Upload in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <=…
CVE-2021-42119 — High (CVSS 7.3): Persistent Cross Site Scripting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform…
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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