CVE-2021-30780

HIGH

iPhone OS < 14.7, macOS < 10.14.5, macOS 11.0-11.5, tvOS < 14.7, watchOS < 7.6 - Out-of-bounds Write

Title source: llm
STIX 2.1

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-005 Mojave, Security Update 2021-004 Catalina. A malicious application may be able to gain root privileges.

References (6)

Core 6
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212601
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212602
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212605
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212600
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212603
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212604

Scores

CVSS v3 7.8
EPSS 0.0130
EPSS Percentile 67.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (7)
apple/iphone_os < 14.7
apple/mac_os_x 10.14.6 (20 CPE variants)
apple/mac_os_x 10.15.7 (9 CPE variants)
apple/mac_os_x 10.14 - 10.14.5
apple/macos 11.0 - 11.5
apple/tvos < 14.7
apple/watchos < 7.6
Published Sep 08, 2021
Tracked Since Feb 18, 2026