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Vulnerability record · CVE-2020-12498 · published 1 July 2020

CVE-2020-12498: Phoenixcontact pc worx stack-based buffer overflow vulnerability

Phoenixcontact · Pc Worx

mwe file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier is vulnerable to out-of-bounds read remote code execution. Manipulated PC Worx projects could lead to a remote code execution due to insufficient input data validation.

7.8 CVSS 3.1 High EPSS 2.1% · top 19.0% CWE-121 · Stack-based buffer overflowCWE-125 · Out-of-bounds read
7.8CVSS 3.1 base score, v2 6.8
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

mwe file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier is vulnerable to out-of-bounds read remote code execution. Manipulated PC Worx projects could lead to a remote code execution due to insufficient input data validation.

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

Affected products

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

References

LinkTags
https://cert.vde.com/de-de/advisories/vde-2020-023 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-826/ Third Party Advisory
https://cert.vde.com/de-de/advisories/vde-2020-023 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-826/ Third Party Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2020-12498), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.