Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Safari | < 14.1.1 |
| Apple | Ipados | >= 14.0, < 14.5.1 |
| Apple | Iphone Os | < 12.5.3 |
| Apple | Macos | >= 11.0, < 11.3.1 |
| Apple | Tvos | < 14.6 |
Related Weaknesses (CWE)
References
- https://support.apple.com/en-us/HT212335Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212336Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212341Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212532Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212534Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212335Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212336Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212341Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212532Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212534Release NotesVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2021-30663?
CVE-2021-30663 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 maliciousl...
How severe is CVE-2021-30663?
CVE-2021-30663 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-30663?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos.