Controller outage via malformed Class 3 message
Published May 31, 2022 · Updated Apr 16, 2025
Denial of service in Rockwell Automation Logix Controllers allows remote attackers to trigger a major nonrecoverable fault. A malformed Class 3 CIP message over a cached connection modifies a message instruction control structure and faults the controller. No authentication or user interaction is required, and recovery requires clearing the fault and redownloading the user project.
Summary
What happened
Denial of service in Rockwell Automation Logix Controllers allows remote attackers to trigger a major nonrecoverable fault. A malformed Class 3 CIP message over a cached connection modifies a message instruction control structure and faults the controller. No authentication or user interaction is required, and recovery requires clearing the fault and redownloading the user project.
The record
- CVE
- CVE-2022-1797
- Published
- May 31, 2022
- Updated
- Apr 16, 2025
- Vendor
- Rockwell Automation
- Product
- GuardLogix 5570 Controllers
- Classifications
- CWE-400, T0814
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 31, 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?
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- Affected versionversion=33.013
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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