vulnerability
OS X update for WebKit (CVE-2021-30858)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Aug 24, 2021 | Nov 17, 2021 | Mar 27, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Aug 24, 2021
Added
Nov 17, 2021
Modified
Mar 27, 2026
Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. 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.
Solution
apple-osx-upgrade-11_6
Rapid7 Labs
2026 Global Threat Landscape Report
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