03.16.02 Unsupported System Components
What the standard requires
a. Replace system components when support for the components is no longer available from the developer, vendor, or manufacturer. b. Provide options for risk mitigation or alternative sources for continued support for unsupported components that cannot be replaced.
Quoted verbatim from NIST SP 800-171 Rev 3, which is in the public domain.
Cross-framework mappings
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Track 03.16.02 with evidence behind it
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