Systems must be at supported service packs (SP) or releases levels.

From Windows Vista Security Technical Implementation Guide

Associated with IA controls: VIVM-1

SV-29341r1_rule Systems must be at supported service packs (SP) or releases levels.

Vulnerability discussion

Systems at unsupported service packs or releases will not receive security updates for new vulnerabilities and leaves them subject to exploitation. Systems must be maintained at a service pack level supported by the vendor with new security updates.

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Update the system to a supported service pack. Application of new service packs should be thoroughly tested before deploying in a production environment.

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