9.8
Critical
Exploited
CVE-2021-1871 Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Not observed so far
Weakness
CWE-1173
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..
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| iOS and iPadOS 14.4 | earliest → < 14.4 | 14.4 |
| macOS 11.2 | earliest → < 11.2 | 11.2 |
References
- support.apple.com support.apple.com
- support.apple.com support.apple.com
- FEDORA-2021-864dc37032 lists.fedoraproject.org
- DSA-4923 www.debian.org
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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The 2049 CVEs of iOS and iPadOS →
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