Zero-day vulnerability in Apple iOS

Integer overflow

Vulnerability details

Advisory: SB2021101201 - Privilege escalation in Apple iOS and iPadOS

Vulnerable component: Apple iOS

CVE-ID: CVE-2021-30883

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

CWE-ID: CWE-190 - Integer overflow


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

The vulnerability exists due to a boundary error within the IOMobileFrameBuffer subsystem. A malicious application can trigger integer overflow and execute arbitrary code on with kernel privileges.

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

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