CMMC Practice MA.L2-3.7.6 – Maintenance Personnel: Supervise the maintenance activities of personnel without required access authorization.
Links to Publicly Available Resources
Discussion [NIST SP 800-171 R2]
This requirement applies to individuals who are performing hardware or software maintenance on organizational systems, while PE.L1-3.10.1 addresses physical access for individuals whose maintenance duties place them within the physical protection perimeterof the systems (e.g., custodial staff, physical plant maintenance personnel). Individuals not previously identified as authorized maintenance personnel, such as information technology manufacturers, vendors, consultants, and systems integrators, may require privileged access to organizational systems, for example, when required to conduct maintenance activities with little or no notice. Organizations may choose to issue temporary credentials to these individuals based on organizational risk assessments. Temporary credentials may be for one-time use or for very limited time periods.
Individuals without proper permissions must be supervised while conducting maintenance on organizational machines. Consider creating temporary accounts with short-term expiration periods rather than regular user accounts. Additionally, limit the permissions and access these accounts have to the most restrictive settings possible.