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High 8.7Published Sep 1, 2026
CVE-2026-9622RSLinx Classic® - Multiple Vulnerabilities
Updated under an hour ago ()
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It affects Rockwell Automation RSLinx Classic®. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet targeting the Forward Close service can cause the RSLinx® Classic service to crash, requiring a restart of the service to recover.
- CVSS
- 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-191
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Rockwell
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Rockwell Automation RSLinx Classic® rockwell_automation:rslinx_classic (from the name) | V4.50 and prior | CNA record |
References
- https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1794.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.