CVE-2021-42026

Name: CVE-2021-42026
Creator: NVD / NIST
Published: 2021-11-09T12:15:10.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2021-42026 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability has been identified in Mendix Applications using Mendix 8 (All versions < V8.18.13), Mendix Applications using Mendix 9 (All versions < V9.6.2). Applications built with affected versions of Mendix Studio Pro do not properly control read access for certain client actions. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in Mendix Applications using Mendix 8 (All versions < V8.18.13), Mendix Applications using Mendix 9 (All versions < V9.6.2). Applications built with affected versions of Mendix Studio Pro do not properly control read access for certain client actions. This could allow authenticated attackers to retrieve the changedDate attribute of arbitrary objects, even when they don't have read access to them.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.55%

41.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Mendix	Mendix	>= 8.0.0, < 8.18.13
Mendix	Mendix	>= 9.0.0, < 9.6.2

References

https://cert-portal.siemens.com/productcert/pdf/ssa-779699.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-779699.pdfPatch, Vendor Advisory

Timeline

Published: Nov 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42026?

How severe is CVE-2021-42026?

CVE-2021-42026 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42026?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-42026?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST