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Vulnerability record · CVE-2025-11694 · published 16 June 2026

CVE-2025-11694: A security issue exists within 1769 CompactLogix controllers due to the missing validation of sequence numbers…

A security issue exists within 1769 CompactLogix controllers due to the missing validation of sequence numbers and source IP addresses in the CIP protocol. This allows attacker to abuse the exposed Connection ID’s visible on the web interface to perform denial-of-service attacks, resulting in a minor fault.

8.7 CVSS 4.0 High EPSS 0.17% · top 94.3% CWE-354 · CWE-354 Awaiting Analysis
8.7CVSS 4.0 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

A security issue exists within 1769 CompactLogix controllers due to the missing validation of sequence numbers and source IP addresses in the CIP protocol. This allows attacker to abuse the exposed Connection ID’s visible on the web interface to perform denial-of-service attacks, resulting in a minor fault.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1776.html

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Source: NIST National Vulnerability Database (record CVE-2025-11694), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.