CVE-2020-12038

Name: CVE-2020-12038
Creator: NVD / NIST
Published: 2020-05-19T22:15:12.013+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 2.51%

Last modified Jun 17, 2026

CVE-2020-12038 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. EPSS estimates a 2.51% chance of exploitation in the next 30 days.

Description

Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

2.51%

82.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rockwellautomation	Eds Subsystem	<= 28.0.1
Rockwellautomation	Rslinx	<= 4.11.00
Rockwellautomation	Rslinx Enterprise	6.00.00
Rockwellautomation	Rslinx Enterprise	6.10.00
Rockwellautomation	Rslinx Enterprise	6.11.00
Rockwellautomation	Rsnetworx	<= 28.00.00
Rockwellautomation	Studio 5000 Logix Designer	<= 32.0

References

https://www.us-cert.gov/ics/advisories/icsa-20-140-01Mitigation, Patch, Third Party Advisory, US Government Resource
https://www.us-cert.gov/ics/advisories/icsa-20-140-01Mitigation, Patch, Third Party Advisory, US Government Resource

Timeline

Published: May 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12038?

How severe is CVE-2020-12038?

CVE-2020-12038 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 2.51% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12038?

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-2020-12038?

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

Scan your code now

Source: NVD / NIST