CISA KEV · Known exploitedHigh

CVE-2022-42856

Apple iOS

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1..

CVSS: 8.8
EPSS: 8.52%
CISA KEV: Listed
Published: 2022.12.16

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability8.52%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Apple iOS
Affected versions: unspecified, < 16.2, < 15.7.2, >= 16.0 < 16.1.2, < 13.1
Fixed versions: 16.2, 15.7.2, 16.1.2, 13.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2023.01.04

1
Identify
Confirm that Apple iOS and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-843
KEV added: 2022.12.14
Ransomware use: 미확인