CVE-2021-1817
8.8
HIGH
CVSS 3.1
EPSS 0.97%
Description
A memory corruption issue was addressed with improved state management. 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 lead to arbitrary code execution.
How to fix CVE-2021-1817
To remediate CVE-2021-1817, upgrade the affected package to a fixed version below.
- Debian/webkit2gtk—upgrade to 2.30.1-1 or later
- —upgrade to 2.30.0-1 or later
Is CVE-2021-1817 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.30.1-1
- from 0, < 2.30.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |