HIGH

CVE-2020-13573

Q: What is CVE-2020-13573?

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.

Q: Is CVE-2020-13573 actively exploited?

Active exploitation of CVE-2020-13573 has not been confirmed. Its EPSS score was 3.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-13573?

CVE-2020-13573 has a CVSS v3 base score of 7.5 (HIGH severity).

CVSS v3

7.5

HIGH

EPSS Score

3.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-26-167-02 CISA1 known affected
RSLinx Classic Third-Party Vulnerability
Rockwell Automation RSLinx Classic: <=4.50.00

Full record on 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.

Technical details

Published: 2021-01-07

Frequently asked questions

What is CVE-2020-13573?

Is CVE-2020-13573 actively exploited?

Active exploitation of CVE-2020-13573 has not been confirmed. Its EPSS score was 3.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-13573?

CVE-2020-13573 has a CVSS v3 base score of 7.5 (HIGH severity).

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