vulnerability
OS X update for WebKit (CVE-2021-1820)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | Aug 23, 2021 | Aug 23, 2021 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Aug 23, 2021
Added
Aug 23, 2021
Modified
Mar 27, 2026
Description
A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may result in the disclosure of process memory.
Solution
apple-osx-upgrade-11_3
Rapid7 Labs
2026 Global Threat Landscape Report
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