CVE-2021-31339

Name: CVE-2021-31339
Creator: NVD / NIST
Published: 2021-05-12T14:15:11.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2021-31339 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability has been identified in Mendix Excel Importer Module (All versions < V9.0.3). Uploading a manipulated XML File results in an exception that could expose information about the Application-Server and the used XML-Framework.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in Mendix Excel Importer Module (All versions < V9.0.3). Uploading a manipulated XML File results in an exception that could expose information about the Application-Server and the used XML-Framework.

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

0.76%

50.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-209

Affected Software

Vendor	Product	Versions
Mendix	Excel Importer	< 9.0.3

References

https://cert-portal.siemens.com/productcert/pdf/ssa-854248.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-09Third Party Advisory, US Government Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-854248.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-09Third Party Advisory, US Government Resource

Timeline

Published: May 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31339?

How severe is CVE-2021-31339?

CVE-2021-31339 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31339?

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-2021-31339?

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

Scan your code now

Source: NVD / NIST