CVE-2022-42827

Apple iOS and iPadOS Out-of-Bounds Write Vulnerability

High 7.8
Exploited: added to CISA KEV 25 Oct 2022

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.7.1 and iPadOS 15.7.1, iOS 16.1 and iPadOS 16. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

Key facts

Published: 1 Nov 2022
Last changed: 21 Oct 2025
Assigned by: apple
KEV added: 25 Oct 2022
KEV fix due: 15 Nov 2022
EPSS: 1.062% likely to be exploited in the next 30 days, higher than 65.135% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

7.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What to do

Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
Apple	iOS and iPadOS	unspecified up to but excluding 16.1 (affected)
Apple	iOS and iPadOS	unspecified up to but excluding 15.7 (affected)