CVE-2021-30657
Published: November 3, 2021
Official Description
Apple macOS contains an unspecified logic issue in System Preferences that may allow a malicious application to bypass Gatekeeper checks.
CISA KEV Advisory
Apple macOS Unspecified Vulnerability
Apple macOS contains an unspecified logic issue in System Preferences that may allow a malicious application to bypass Gatekeeper checks.
Apply updates per vendor instructions.
Risk Analysis
An unspecified logic issue in Apple macOS System Preferences could allow a malicious application to bypass Gatekeeper security checks. The high EPSS score of 0.76259 indicates a significant probability of exploitation, and its presence in CISA's KEV highlights that this vulnerability is actively being exploited.
This vulnerability is actively being exploited in the wild, as evidenced by its inclusion in CISA's KEV.
Users should apply all available security updates for Apple macOS to patch this vulnerability and ensure Gatekeeper is functioning correctly.
Technical Analysis
CVE-2021-30657 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-30657 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-30657 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1