CVE-2021-30663
- State
- Published
- Severity
- 7.8 High
- Published
- Sep 8, 2021
- Updated
- Oct 21, 2025
- Reserved
- Apr 13, 2021
Description
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-190 Integer Overflow or Wraparound
Affected Products
| Product | Versions |
|---|---|
macOSApple |
|
macOSApple |
|
macOSApple |
|
macOSApple |
|
macOSApple |
|
References
- https://support.apple.com/en-us/HT212532
- https://support.apple.com/en-us/HT212534
- https://support.apple.com/en-us/HT212341
- https://support.apple.com/en-us/HT212335
- https://support.apple.com/en-us/HT212336
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663government-resource
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