CVE-2021-30661: Apple Multiple Products WebKit Storage Use-After-Free Vulnerability
High · CVSS 8.8 (CVSS 3.1)KEV known exploitedEPSS 4.5%, 91th percentilePublished Updated Assigner: apple
In CISA’s Known Exploited Vulnerabilities catalog: Apple Multiple Products WebKit Storage Use-After-Free Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
Description
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..
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Apple: iOS and iPadOSApple: macOSApple: SafariApple: tvOSApple: watchOS
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- support.apple.com/en-us/HT212317 (opens in new tab)
- support.apple.com/en-us/HT212318 (opens in new tab)
- support.apple.com/en-us/HT212323 (opens in new tab)
- support.apple.com/en-us/HT212324 (opens in new tab)
- support.apple.com/en-us/HT212325 (opens in new tab)
- support.apple.com/en-us/HT212341 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)