How severe is CVE-2022-3157?

CVE-2022-3157 has a CVSS 3.x base score of 8.6, 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-2022-3157 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3157?

CVE-2022-3157 primarily affects Rockwellautomation Compactlogix 5370 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-3157?

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-2022-3157 published?

CVE-2022-3157 was published on 2022-12-16 and last updated on 2026-06-17.

CVE-2022-3157

CVE-2022-3157 is a high-severity vulnerability in Rockwellautomation Compactlogix 5370 Firmware with a CVSS 3.x base score of 8.6. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Rockwellautomation Compactlogix 5370 Firmware
Published: 2022-12-16
Last modified: 2026-06-17

Description

A vulnerability exists in the Rockwell Automation controllers that allows a malformed CIP request to cause a major non-recoverable fault (MNRF) and a denial-of-service condition (DOS).

Frequently asked questions

What is CVE-2022-3157?: A vulnerability exists in the Rockwell Automation controllers that allows a malformed CIP request to cause a major non-recoverable fault (MNRF) and a denial-of-service condition (DOS).
How severe is CVE-2022-3157?: CVE-2022-3157 has a CVSS 3.x base score of 8.6, 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-2022-3157 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3157?: CVE-2022-3157 primarily affects Rockwellautomation Compactlogix 5370 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-3157?: 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-2022-3157 published?: CVE-2022-3157 was published on 2022-12-16 and last updated on 2026-06-17.

References

https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1137757

Affected products (6)

cpe:2.3:o:rockwellautomation:compactlogix_5370_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compact_guardlogix_5380_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:controllogix_5570_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:controllogix_5570_redundancy_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:guardlogix_5570_firmware:*:*:*:*:*:*:*:*

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