CVE-2021-1871
Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability
9.8
CRITICAL
CVSS 3.1
⚠ KEVEPSS 0.48%
Description
A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
How to fix CVE-2021-1871
To remediate CVE-2021-1871, upgrade the affected package to a fixed version below.
- —upgrade to 2.32.0-2 or later
- —upgrade to 2.32.0-2 or later
Is CVE-2021-1871 being exploited?
Yes — CVE-2021-1871 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (2)
- from 0, < 2.32.0-2
- from 0, < 2.32.0-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |