Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-30748
CVE-2021-30748:
macOS vulnerability analysis and mitigation
Overview
A memory corruption vulnerability (CVE-2021-30748) was discovered in Apple's AVEVideoEncoder component affecting iOS 14.7, macOS Big Sur 11.5, and tvOS 14.7. The vulnerability was discovered by George Nosenko and disclosed to Apple, who released patches in July 2021 (Apple iOS, Apple macOS, Apple tvOS).
Technical details
The vulnerability is a memory corruption issue in the AVEVideoEncoder component that was addressed with improved state management. The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (NVD).
Impact
When successfully exploited, this vulnerability allows an application to execute arbitrary code with kernel privileges, potentially giving an attacker complete control over the affected system (Apple iOS, Apple macOS).
Mitigation and workarounds
Apple has addressed this vulnerability in iOS 14.7, macOS Big Sur 11.5, and tvOS 14.7. Users should update their devices to these versions or later to protect against this vulnerability (Apple iOS, Apple macOS, Apple tvOS).
Additional resources
Source: This report was generated using AI
Related macOS vulnerabilities:
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