CVE-2021-30663: Apple Multiple Products WebKit Integer Overflow Vulnerability
High · CVSS 7.8 (CVSS 3.1)KEV known exploitedEPSS 3.5%, 89th percentilePublished Updated Assigner: apple
In CISA’s Known Exploited Vulnerabilities catalog: Apple Multiple Products WebKit Integer Overflow Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
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.
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Apple: macOS
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- support.apple.com/en-us/HT212335 (opens in new tab)
- support.apple.com/en-us/HT212336 (opens in new tab)
- support.apple.com/en-us/HT212341 (opens in new tab)
- support.apple.com/en-us/HT212532 (opens in new tab)
- support.apple.com/en-us/HT212534 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)