SBOM (Software Bill of Materials)

In telecom networks, an SBOM is a machine-readable inventory of the open-source and third-party components that make up a network function, OSS application, or container image. Operators use SBOMs to assess exposure to new CVEs across virtualized 5G core deployments and to satisfy regulatory and supply-chain assurance requirements.

Categories: Radio Access NetworkCore NetworkCloud and Virtualization

SBOM in context

The radio access network is the layer where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations, downgrade attacks and jamming, and defenses hinge on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

The mobile core is where subscriber sessions, mobility and policy live. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF. Core exposure is the difference between a single-subscriber leak and a fleet-wide breach.

To place SBOM in the wider telecom-security picture, review SMO, GSMA SCAS, ETSI ISG NFV, NESAS, Vulnerability Management and Patch Management.

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