Description
A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. 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..
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Apple | macOS | >= unspecified, < 11.3 |
| Apple | macOS | >= unspecified, < 14.5 |
| Apple | macOS | >= unspecified, < 7.4 |
| Apple | macOS | >= unspecified, < 12.5 |
| Apple | macOS | >= unspecified, < 14.6 |
References
- https://support.apple.com/en-us/HT212335Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212336Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212339Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212341Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212532Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212335Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212336Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212339Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212341Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212532Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30665Third Party Advisory, US Government Resource
Timeline
- Published
- Sep 8, 2021
- Last modified
- Jun 17, 2026
- Added to CISA KEV
- Nov 3, 2021
- NVD status
- Analyzed