최우선 대응높음CISA KEV · 실제 악용 확인
CVE-2021-30661
Apple Multiple Products WebKit Storage Use-After-Free Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 8.8
- EPSS
- 4.26% 백분위 89.8% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2021.11.17
- 공개일
- 2021.09.09
CISA KEV에 등록된 실제 악용 확인 취약점
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
공급사 Apple
제품 Multiple Products
영향 버전 unspecified, < 14.1, < 14.5, < 12.5.3, >= 14.0 < 14.5, >= 11.0 < 11.3, < 7.4
수정 버전 14.1, 14.5, 12.5.3, 11.3, 7.4
Apply updates per vendor instructions.
조치 기한: 2021.11.17CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-416
KEV 등록일 2021.11.03
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://nvd.nist.gov/vuln/detail/CVE-2021-30661
EPSS 데이터 기준일 2026.06.27