How severe is CVE-2020-13573?

CVE-2020-13573 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-13573 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13573?

CVE-2020-13573 affects Rockwellautomation Rslinx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13573?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-13573 published?

CVE-2020-13573 was published on 2021-01-07 and last updated on 2026-06-17.

CVE-2020-13573

CVE-2020-13573 is a high-severity vulnerability in Rockwellautomation Rslinx with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Rockwellautomation Rslinx
Published: 2021-01-07
Last modified: 2026-06-17

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.

Frequently asked questions

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.
How severe is CVE-2020-13573?: CVE-2020-13573 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-13573 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13573?: CVE-2020-13573 affects Rockwellautomation Rslinx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13573?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-13573 published?: CVE-2020-13573 was published on 2021-01-07 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:rockwellautomation:rslinx:2.57.00.14:cpr9_sr3:*:*:classic:*:*:*

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