CVE-2021-30883

Apple's iOS, macOS, watchOS, and tvOS suffered a memory corruption vulnerability enabling remote code execution.

A memory corruption flaw in Apple's operating systems allowed attackers to execute arbitrary code remotely, directly violating CMMC/NIST 800-171 requirements for patch management and system hardening. DIB organizations must ensure all Apple devices are patched immediately to prevent compromise of classified or controlled unclassified information (CUI). This failure highlights the risk of relying on unpatched software, even from major vendors.

Shame score — A memory corruption vulnerability in widely deployed operating systems that enables remote code execution is a severe, avoidable failure that exposes systems to active exploitation.