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Vulnerability record · CVE-2021-33718 · published 13 July 2021

CVE-2021-33718: Siemens mendix incorrect authorization vulnerability

Siemens · Mendix

A vulnerability has been identified in Mendix Applications using Mendix 7 (All versions < V7.23.22), Mendix Applications using Mendix 8 (All versions < V8.18.7), Mendix Applications using Mendix 9 (All versions < V9.3.0). Write access checks of attributes of an object could be bypassed, if user has a write permissions to the first attribute of this object.

5.3 CVSS 3.1 Medium EPSS 0.58% · top 54.5% CWE-863 · Incorrect authorization
5.3CVSS 3.1 base score, v2 3.5
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability has been identified in Mendix Applications using Mendix 7 (All versions < V7.23.22), Mendix Applications using Mendix 8 (All versions < V8.18.7), Mendix Applications using Mendix 9 (All versions < V9.3.0). Write access checks of attributes of an object could be bypassed, if user has a write permissions to the first attribute of this object.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-352521.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-352521.pdf Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-33718), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.