CVE-2021-30657

A macOS logic flaw in System Preferences allowed malicious apps to bypass Gatekeeper, and the vulnerability was actively exploited in the wild.

Apple's macOS System Preferences contained a logic issue that let malicious applications bypass Gatekeeper security checks. This failure matters to DIB organizations because it demonstrates how even major vendors can ship unpatched, actively exploited vulnerabilities that undermine endpoint security controls. Organizations must verify that their macOS endpoints are patched and that Gatekeeper remains effective against known exploits.

Shame score — A major vendor shipped an actively exploited vulnerability that bypassed a core security control, showing negligence in patching and testing before release.