Vulnerability Database

314,373

Total vulnerabilities in the database

CVE-2021-30663

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.

  • Published: Sep 8, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-30663
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.8
  • AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:M/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
apple / safari - 14.1.1
apple / tvos - 14.6
apple / iphone_os - 12.5.3
apple / ipados 14.0 14.5.1
apple / iphone_os 14.0 14.5.1
apple / macos 11.0 11.3.1