SBOMs Become a Standard Artifact Where IEC 62443 Meets the Cyber Resilience Act

Software bills of materials are described as becoming a standard artifact in 2026, providing transparency about which components a product contains, and they sit precisely where IEC 62443 and the EU Cyber Resilience Act overlap — which is the argument for reading the two together rather than as separate compliance projects.

The overlap is not coincidental. Both regimes are trying to answer the same operational question: when a vulnerability is disclosed in a widely used library, which products contain it and who must be told. Neither can be satisfied without a component inventory that is accurate at the version level and maintained as builds change, and that inventory is the SBOM.

What makes this practical rather than bureaucratic is that one artifact discharges obligations in both directions. The same SBOM that supports a 62443 certification submission supports the CRA's 24-hour reporting duty, because both depend on being able to answer the affected-products question quickly. Building it once, generated automatically from the build system rather than assembled by hand, is the difference between a capability and a document that was accurate on the day it was written.