Denial of service via malformed CIP request
Published Dec 16, 2022 · Updated Apr 16, 2025
Improper input validation in Rockwell Automation controllers versions 20 through 33 allows remote attackers to interrupt service via malformed CIP requests. The controller's CIP request parser accepts malformed input that drives a major non-recoverable fault and leaves the device unavailable. No authentication or user interaction is required, and the consequence is controller availability loss rather than data disclosure or modification.
Summary
What happened
Improper input validation in Rockwell Automation controllers versions 20 through 33 allows remote attackers to interrupt service via malformed CIP requests. The controller's CIP request parser accepts malformed input that drives a major non-recoverable fault and leaves the device unavailable. No authentication or user interaction is required, and the consequence is controller availability loss rather than data disclosure or modification.
The record
- CVE
- CVE-2022-3157
- Published
- Dec 16, 2022
- Updated
- Apr 16, 2025
- Vendor
- Rockwell Automation
- Product
- GuardLogix 5570 Controllers
- Classifications
- CWE-20, CAPEC-123, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 16, 2022CVE publishedPublication date reported by the CVE source.
- Apr 16, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=20 <=33
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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