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CVE-2021-30665Apple Multiple Products WebKit Memory Corruption Vulnerability
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..
8.8 HIGHEPSS 3.70%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.8 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 6.8 | MEDIUM | 2.0NVD | AV:N/AC:M/Au:N/C:P/I:P/A:P |
CISA required action
⚡ Known exploited · remediation due Nov 17, 2021
Apply updates per vendor instructions.
Details
- CVE ID
- CVE-2021-30665
- Status
- Analyzed
- Assigner (CNA)
- apple
- Published
- Sep 8, 2021
- Last modified
- 2026-06-17 03:50 UTC
- Weaknesses
Affected Products
As published by the CNA in the CVE record.
ApplemacOS1 version range
- before 11.3
ApplemacOS1 version range
- before 14.5
ApplemacOS1 version range
- before 7.4
ApplemacOS1 version range
- before 12.5
ApplemacOS1 version range
- before 14.6
References
- support.apple.com https://support.apple.com/en-us/HT212335
- support.apple.com https://support.apple.com/en-us/HT212336
- support.apple.com https://support.apple.com/en-us/HT212339
- support.apple.com https://support.apple.com/en-us/HT212341
- support.apple.com https://support.apple.com/en-us/HT212532
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30665