Is CVE-2020-13573 actively exploited?

No active exploitation of CVE-2020-13573 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-13573 be exploited remotely?

Yes. CVE-2020-13573 is exploitable remotely over the network (CVSS attack vector: Network).

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

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

HOME VULNERABILITIESCVE-2020-13573

HIGH

CVE-2020-13573

CWE-823Published: January 7, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-13573 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Affected Vendors & Products

rockwellautomation1 product(s)

rslinx

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2020-1184

News & Research Mentioning CVE-2020-13573

Rockwell Automation RSLinx

CISA Alerts· Jun 16, 2026

View CSAF Summary Successful exploitation of this vulnerability can lead to a denial of service, where the application will become unresponsive and will not recover on its own. The following versions of RSLinx Classic Third-Party Vulnerability are affected: RSLinx Classic <=4.50.00 (CVE-2020-13573) CVSS Vendor Equipment Vulnerabilities v3 7.5 Rockwell Automation RSLinx Classic Third-Party Vulnerability Out-of-bounds Read Background Critical Infrastructure Sectors: Critical Manufacturing, Energy, Food and Agriculture, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2020-13573 The affected product is vulnerable to a stack-based buffer overflow, which may allow an att [xlite_meta score:79 src:CISA Alerts xlite_fp:dc0ed9794205d438a99ebc3b1cac613b8a3ced79a7fd31a34178d49692252e42]