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CVE-2021-30663

HIGHCISA KEV

8.8

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.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published9/8/2021

Last Modified10/23/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorApple

ProductMultiple Products

Vulnerability NameApple Multiple Products WebKit Integer Overflow Vulnerability

KEV Date Added2021-11-03

Remediation Due Date2021-11-17

Ransomware UseUnknown

Affected Products

apple:ipadosapple:iphone_osapple:macosapple:safariapple:tvos

Weaknesses (CWE)

CWE-190CWE-190

References

https://support.apple.com/en-us/HT212335(product-security@apple.com)

https://support.apple.com/en-us/HT212336(product-security@apple.com)

https://support.apple.com/en-us/HT212341(product-security@apple.com)

https://support.apple.com/en-us/HT212532(product-security@apple.com)

https://support.apple.com/en-us/HT212534(product-security@apple.com)

https://support.apple.com/en-us/HT212335(af854a3a-2127-422b-91ae-364da2661108)

https://support.apple.com/en-us/HT212336(af854a3a-2127-422b-91ae-364da2661108)

https://support.apple.com/en-us/HT212341(af854a3a-2127-422b-91ae-364da2661108)

https://support.apple.com/en-us/HT212532(af854a3a-2127-422b-91ae-364da2661108)

https://support.apple.com/en-us/HT212534(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30663(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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