Zero-day vulnerability in Apple iOS

Buffer overflow

Vulnerability details

Advisory: SB2021072626 - Privilege escalation in Apple iOS and iPadOS

Vulnerable component: Apple iOS

CVE-ID: CVE-2021-30807

CVSSv3 score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-119 - Memory corruption


The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to a boundary within the IOMobileFrameBuffer subsystem. A local application can trigger memory corruption and execute arbitrary code on the target system with kernel privileges.

Note, the vulnerability is being actively exploited in the wild.

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