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High 8.7Published Sep 1, 2026

CVE-2026-9637CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities

Updated under an hour ago ()

Does this affect you?

It affects Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

A denial-of-service security issue exists in the affected Logix platforms listed in the table above. The security issue stems from improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle 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-119
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

Affected products
Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580
rockwell_automation:compactlogix_5380_controllogix_5580 (from the name)
V33 and prior, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012
CNA record

References

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.

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