A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. This vulnerability is triggered during fuzzing of multiple CIP classes, which causes the CIP port to become unresponsive.
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Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-01-20. NVD baseline CVSS 7.5; sources differ by 0.0.
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. This vulnerability is triggered during fuzzing of multiple CIP classes, which causes the CIP port to become unresponsive.
January 20, 2026
February 2, 2026
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CWE-400