CVE-2021-42117Network attack vector

Authenticated HTML injection via insufficient input validation

Published Nov 30, 2021 · Updated Aug 4, 2024

HTML injection in Business-DNA Solutions GmbH TopEase 7.1.27 and earlier allows remote authenticated users to insert arbitrary HTML. The published record identifies insufficient validation in TopEase web applications but does not disclose the affected field, handler, or rendering path. Object Modification privileges and user interaction are required; the documented effect is unauthorized page-content modification without code execution.

CVSS severity5.4
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML injection in Business-DNA Solutions GmbH TopEase 7.1.27 and earlier allows remote authenticated users to insert arbitrary HTML. The published record identifies insufficient validation in TopEase web applications but does not disclose the affected field, handler, or rendering path. Object Modification privileges and user interaction are required; the documented effect is unauthorized page-content modification without code execution.

The record

CVE
CVE-2021-42117
Published
Nov 30, 2021
Updated
Aug 4, 2024
Vendor
Business-DNA Solutions GmbH
Product
TopEase
Classifications
CWE-79, CWE-20
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=7.1.27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Business-DNA Solutions GmbH · TopEaseversion=unspecified <=7.1.27

Published CVSS scores

3.5Switzerland Government Common Vulnerability ProgramCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
3.5NIST National Vulnerability DatabaseAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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