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Vulnerability record · CVE-2020-13573 · published 7 January 2021

CVE-2020-13573: Rockwellautomation rslinx memory buffer overflow vulnerability

Rockwellautomation · Rslinx

A denial-of-service vulnerability exists in the Ethernet/IP server functionality of Rockwell Automation RSLinx Classic 2.57.00.14 CPR 9 SR 3. A specially crafted network request can lead to a denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

7.5 CVSS 3.1 High EPSS 3.4% · top 11.5% CWE-823 · CWE-823CWE-119 · Memory buffer overflow
7.5CVSS 3.1 base score, v2 5.0
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A denial-of-service vulnerability exists in the Ethernet/IP server functionality of Rockwell Automation RSLinx Classic 2.57.00.14 CPR 9 SR 3. A specially crafted network request can lead to a denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

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

Affected products

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

References

LinkTags
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1184 ExploitTechnical DescriptionThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1184 ExploitTechnical DescriptionThird Party Advisory

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Related vulnerabilities

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

9.8CVE-2019-6553Rockwell RSLinx Classic stack buffer overflow via Forward Open requestRockwell Automation RSLinx Classic 4.10.00 and prior contains an input validation flaw in a DLL where data from a Forward Open service request is cop…EPSS 66%analysed9.8CVE-2018-14829Rockwellautomation rslinx stack-based buffer overflow vulnerabilityRockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote threat actor to intentionally send a malformed C…EPSS 16%9.3CVE-2011-2530Rockwellautomation rslinx memory buffer overflow vulnerabilityBuffer overflow in RSEds.dll in RSHWare.exe in the EDS Hardware Installation Tool 1.0.5.1 and earlier in Rockwell Automation RSLinx Classic before 2.…EPSS 7.6%8.2CVE-2020-12034Rockwellautomation eds subsystem sql injection vulnerabilityProducts that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and …EPSS 1.3%7.5CVE-2018-14821Rockwellautomation rslinx heap-based buffer overflow vulnerabilityRockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally s…EPSS 4.5%7.5CVE-2018-14827Rockwellautomation rslinx uncontrolled resource consumption vulnerabilityRockwell Automation RSLinx Classic Versions 4.00.01 and prior. A remote, unauthenticated threat actor may intentionally send specially crafted Ethern…EPSS 3.8%6.9CVE-2014-9204Rockwellautomation rslinx memory buffer overflow vulnerabilityStack-based buffer overflow in OPCTest.exe in Rockwell Automation RSLinx Classic before 3.73.00 allows remote attackers to execute arbitrary code via…EPSS 1.6%5.5CVE-2020-12038Rockwellautomation eds subsystem memory buffer overflow vulnerabilityProducts that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and …EPSS 2.5%

Source: NIST National Vulnerability Database (record CVE-2020-13573), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.