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CVE-2021-30663

Severity
HIGH
CVSS
7.8
EPSS
0.0369
Risk score
57.49
CISA KEV
Yes
PoC
No
Published
2021-11-03
Modified
2021-11-03
First seen
2026-08-07
Aliases
EUVD-2021-17580, GHSA-5G93-PF3W-6F59
Products
Apple:Multiple Products, Apple:macOS unspecified <11.3, Apple:macOS unspecified <12.5, Apple:macOS unspecified <14.1, Apple:macOS unspecified <14.5, Apple:macOS unspecified <14.6
Sources
euvd EUVD-2021-17580
cisa.gov CVE-2021-30663

Description

Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit contain an integer overflow vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

References