# SI-2(6) — Removal of Previous Versions of Software and Firmware

- **Control ID:** SI-2(6)
- **Family:** [SI](/md/families/SI.md)
- **Baselines:** No content available.
- **Enhancement of:** [SI-2](/md/controls/SI-2.md)

## Description

Remove previous versions of \[assignment\] after updated versions have been installed.

## Discussion

Previous versions of software or firmware components that are not removed from the system after updates have been installed may be exploited by adversaries. Some products may automatically remove previous versions of software and firmware from the system.

## Implementation guidance

No content available.

## CSF 2.0 subcategories

No content available.

## Related controls

No content available.

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Derived from official NIST publications (NIST SP 800-53 Rev 5 and NIST CSF 2.0). nistcontrols.com is not affiliated with NIST.