CVE-2021-30657

CVE-2021-30657 is a medium-severity (CVSS 5.5) vulnerability in Apple macOS. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by November 17, 2021. CISA does not currently list it as used in ransomware campaigns. Apple has 96 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

• https://support.apple.com/en-us/HT212325
• https://support.apple.com/en-us/HT212326
• https://support.apple.com/en-us/HT212325
• https://support.apple.com/en-us/HT212326
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30657