CVE-2026-9621
RSLinx Classic® - Multiple Vulnerabilities
- State
- Published
- Severity
- 9.2 Critical
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Reserved
- May 26, 2026
Description
A denial-of-service security issue exists within RSLinx® Classic. The security issue stems from improper handling of a malformed packet. A crafted CIP packet can cause the RSLinx® Classic service to crash, requiring a restart of the service to recover
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.2 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H | Rockwell |
Weaknesses
- CWE-190 Integer overflow or wraparound
Affected Products
| Product | Versions |
|---|---|
RSLinx Classic®Rockwell Automation |
|
References
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