CVE-2021-42026

mediumpriority · track · 17OT risk · elevatedEPSS 0.006 · 47 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.57% (47th) EPSS

CVSS 4 · medium

Is it mine?

10 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMendix Applications using Mendix 8siemens_psirt
Update to V8.18.13 or later version and redeploy your application
https://docs.mendix.com/releasenotes/studio-pro/8
FixedMendix Applications using Mendix 9siemens_psirt
Update to V9.6.2 or V9.7.0 or later version and redeploy your application
https://docs.mendix.com/releasenotes/studio-pro/9
FixedMendix Applications using Mendix 8cisa_csaf_ot
Update to V8.18.13 or later version and redeploy your application
https://docs.mendix.com/releasenotes/studio-pro/8
FixedMendix Applications using Mendix 9cisa_csaf_ot
Update to V9.6.2 or V9.7.0 or later version and redeploy your application
https://docs.mendix.com/releasenotes/studio-pro/9
WorkaroundMendix Applications using Mendix 8siemens_psirt
In applications that were built with affected versions of Mendix Studio Pro: avoid using file documents that contain sensitive information
WorkaroundMendix Applications using Mendix 9siemens_psirt
In applications that were built with affected versions of Mendix Studio Pro: avoid using file documents that contain sensitive information
WorkaroundMendix Applications using Mendix 8cisa_csaf_ot
In applications that were built with affected versions of Mendix Studio Pro: avoid using file documents that contain sensitive information
WorkaroundMendix Applications using Mendix 9cisa_csaf_ot
In applications that were built with affected versions of Mendix Studio Pro: avoid using file documents that contain sensitive information

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.1–4.3

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.13.1lowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · CISA US

v3.13.1lowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USCWE-863USCWE-863US

affected products (10)

Products and version ranges known to be affected.

Mendix Applications using Mendix 8all versionscisa_csaf_otUS
Mendix Applications using Mendix 9all versionscisa_csaf_otUS
Siemens Mendix Applications using Mendix 8< V8.18.13cisa_csaf_otUS
Siemens Mendix Applications using Mendix 9< V9.6.2cisa_csaf_otUS
Siemens Mendix Applications using Mendix 8All versions → V8.18.13enisa_euvdEU
Siemens Mendix Applications using Mendix 9All versions → V9.6.2enisa_euvdEU
mendix mendix8.0.0 → 8.18.13nvdUScpe:2.3:a:mendix:mendix:*:*:*:*:*:*:*:*
mendix mendix9.0.0 → 9.6.2nvdUScpe:2.3:a:mendix:mendix:*:*:*:*:*:*:*:*
Siemens Mendix Applications using Mendix 8< V8.18.13siemens_psirtDE
Siemens Mendix Applications using Mendix 9< V9.6.2siemens_psirtDE

advisories (2)

Vendor and ecosystem advisories describing this.

SSA-779699SSA-779699: Two Incorrect Authorization Vulnerabilities in Mendix2021-11-09csaf · siemens_psirtDE
Applications built with affected versions of Mendix Studio Pro do not properly control read or write access for certain client actions. This could allow authenticated attackers to manipulate the content of System.FileDocument objects or to retrieve the changedDate attribute of arbitrary objects. Mendix has released updates for the affected product lines, recommends to update to the latest versions and to redeploy the applications.
ICSA-21-315-05Siemens Mendix Studio Pro2021-11-09icsa · cisa_csaf_otUS
Applications built with affected versions of Mendix Studio Pro do not properly control read or write access for certain client actions. This could allow authenticated attackers to manipulate the content of System.FileDocument objects or to retrieve the changedDate attribute of arbitrary objects. Mendix has released updates for the affected product lines, recommends to update to the latest versions and to redeploy the applications.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd siemens_psirt NVD CVE.org MITRE

published 2021-11-09modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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