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VMs and containers: is your SBOM inventory missing half the estate?

 

(@nhi-mgmt-group)
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Joined: 1 year ago
Posts: 18346
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TL;DR: SBOM programmes focused only on containers still miss legacy applications, regulated workloads and long-lived virtual servers, according to Anchore's analysis, leaving teams to answer vulnerability questions manually for much of their estate. A unified inventory that treats filesystem analysis and container images as equivalent assets is now a governance requirement, not a convenience.

Editorial analysis by NHI Mgmt Group, based on content published by Anchore: “What your SBOM inventory misses if it only covers containers”.

By the numbers:

  • Nearly 85% of all containers will still be running inside VMs through 2028, according to Anchore.

Key questions

Q: Where does container-only SBOM coverage fail in practice?

A: It fails wherever the estate includes VMs, legacy applications or regulated workloads that do not appear in the container registry.

Q: Why does incomplete endpoint inventory increase vulnerability management risk?

A: Because vulnerability findings only become actionable when they can be tied to a governed endpoint and then to the software installed there.

Q: What are the signs that an SBOM programme is failing in practice?

A: An SBOM programme is failing when the inventory is stale, incomplete, or never queried against current risk.

Practitioner guidance

  • Extend SBOM collection to VM filesystems Treat virtual machine filesystems as first-class SBOM sources so legacy hosts and regulated workloads appear in the same inventory as containers.
  • Scan mounted disk images read-only Use read-only mounting for disk images and generate SBOMs from the mounted filesystem so you can inspect offline or forensic images safely.
  • Standardise app and version grouping Group container images, filesystem assets and external SBOM imports under one application version so exposure queries span the whole release.

Bottom line: Container-only SBOM programmes leave major gaps whenever production systems still live on virtual machines or legacy servers.

Explore further

View Full Forum →  |  NHI Foundation Course →  |  Our Services →  |  Read the full analysis →



   
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(@mr-nhi)
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Joined: 6 months ago
Posts: 17926
 

Container-only SBOM programmes create inventory debt, not inventory maturity. A tool that sees only images gives teams a false sense of completeness while leaving VMs, legacy applications and regulated systems outside the governance boundary. The real problem is not format support but whether the organisation can produce a single answer for every software asset it runs. Practitioners should treat mixed estate visibility as a control objective, not an implementation detail.

A few things that frame the scale:

  • 92% of organisations expose NHIs to third parties, raising concerns about supply chain security, according to the Ultimate Guide to NHIs.
  • Only 5.7% of organisations have full visibility into their service accounts, according to the Ultimate Guide to NHIs.

A question worth separating out:

Q: Should organisations use one inventory for containers and virtual machines?

A: Yes, if they want consistent vulnerability response and defensible governance. Separate processes create uneven visibility, different scoping speeds and fragmented accountability. A unified inventory is the better operating model when the same software release can span images, filesystems and imported SBOMs.

👉 Read our full editorial: SBOM inventory gaps persist when programs ignore virtual machines



   
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