What evidence do auditors commonly ask for on PATCHOS-ISM-1501 Operating systems that are no longer supported by vendors are replaced?

Operating system version inventory (for example winver output or scanner OS fingerprinting) compared with vendor support lists; Replacement or upgrade records for operating systems that reached end of support.

What is the most common gap auditors find on PATCHOS-ISM-1501?

Unsupported operating systems kept on isolated but still connected hosts with no approved exception

ACSC Essential Eight Maturity Model (November 2023) · Patch operating systems

`PATCHOS-ISM-1501` Operating systems that are no longer supported by vendors are replaced

Operating systems that are no longer supported by vendors are replaced. Required at Maturity Levels One, Two and Three of the Patch operating systems mitigation strategy (Appendices A, B and C); ISM control ISM-1501 in ASD's Essential Eight to ISM mapping (December 2023).

Source: ACSC Essential Eight Maturity Model (November 2023), PATCHOS-ISM-1501. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open ACSC Essential Eight Maturity Model (November 2023) in the compliance library.

Each row is an ISM control the maturity model requires, with the maturity levels named in its text. Pick your target maturity level and use the rows for it.

artefacts

held by a system

at each review

easy

to go live

Vulnerability scanner / patch tooling

where the evidence lives

teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

Operating system version inventory (for example winver output or scanner OS fingerprinting) compared with vendor support lists · Vulnerability scanner / patch tooling

periodic reviewEvidence produced at each review

Replacement or upgrade records for operating systems that reached end of support · Vulnerability scanner / patch tooling

governing documentDocuments that govern the control

none for this control

First move

Automate the pull from your Vulnerability scanner / patch tooling. Scan schedule, findings and remediation age straight from the scanner; patch compliance from the patch console.

Common gaps auditors find

Unsupported operating systems kept on isolated but still connected hosts with no approved exception

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

Build my evidence sheet

PATCHOS-ISM-1407 The latest release, or the previous release, of operating systems are used · PATCHOS-ISM-1694 Patches, updates or other vendor mitigations for vulnerabilities in operating systems of internet-facing…