CVE-2021-42015

Local document disclosure via browser cache retention

Published Nov 9, 2021 · Updated Aug 4, 2024

Information disclosure in Siemens Mendix applications before 7.23.26, 8.18.12, or 9.6.1 allows local users to read cached file documents. Applications generated by affected Studio Pro releases fail to prevent browsers from caching file documents when the files are opened or downloaded. Access to the same browser's cache is required, and the consequence is limited to reading documents previously handled by that browser.

CVSS severity4.0
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Siemens Mendix applications before 7.23.26, 8.18.12, or 9.6.1 allows local users to read cached file documents. Applications generated by affected Studio Pro releases fail to prevent browsers from caching file documents when the files are opened or downloaded. Access to the same browser's cache is required, and the consequence is limited to reading documents previously handled by that browser.

The record

CVE
CVE-2021-42015
Published
Nov 9, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Mendix
Classifications
CWE-525, T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 9, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=All versions < V7.23.26
  2. Affected versionversion=All versions < V8.18.12
  3. Affected versionversion=All versions < V9.6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Mendixversion=All versions < V7.23.26; version=All versions < V8.18.12; version=All versions < V9.6.1

Published CVSS scores

1.9NIST NVDAV:L/AC:M/Au:N/C:P/I:N/A:N
4.0Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-525Use of Web Browser Cache Containing Sensitive Information
T1005Data from Local System

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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