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Vulnerability record · CVE-2020-12514 · published 22 January 2021

CVE-2020-12514: Pepperl-fuchs io-link master 4-eip firmware null pointer dereference vulnerability

Pepperl Fuchs · Io Link Master 4 Eip Firmware

Pepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to a NULL Pointer Dereference that leads to a DoS in discoveryd

4.9 CVSS 3.1 Medium EPSS 1.0% · top 38.2% CWE-476 · NULL pointer dereference
4.9CVSS 3.1 base score, v2 4.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Pepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to a NULL Pointer Dereference that leads to a DoS in discoveryd

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

Affected products

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

References

LinkTags
https://cert.vde.com/en-us/advisories/vde-2020-038 Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-038 Third Party Advisory

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Related vulnerabilities

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

8.8CVE-2020-12513Pepperl-fuchs io-link master 4-eip firmware os command injection vulnerabilityPepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to an authenticated blind OS Command Injection.EPSS 31%8.8CVE-2020-12511Pepperl-fuchs io-link master 4-eip firmware cross-site request forgery vulnerabilityPepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to a Cross-Site Request Forgery (CSRF) in the web interface.EPSS 0.57%5.4CVE-2020-12512Pepperl-fuchs io-link master 4-eip firmware cross-site scripting vulnerabilityPepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to an authenticated reflected POST Cross-Site ScriptingEPSS 0.72%6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed

Source: NIST National Vulnerability Database (record CVE-2020-12514), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.