CVE-2022-42856: Apple iOS Type Confusion Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on , 1 day before the CVE record was published.
- How likely is exploitation in the next 30 days?
- 8.5%
EPSS score, percentile 95 of all scored records
- How severe?
- 8.8 High
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
CISA deadline . Apply updates per vendor instructions.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- before 16.2
- before 13.1
- before 15.7
- before 16.1
- before 16.2
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
What to do
Required action, set by CISA
Apply updates per vendor instructions.
CISA due date for this action: .
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | before 16.2 |
| Status | Versions |
|---|---|
| Affected | before 13.1 |
| Status | Versions |
|---|---|
| Affected | before 15.7 |
| Status | Versions |
|---|---|
| Affected | before 16.1 |
| Status | Versions |
|---|---|
| Affected | before 16.2 |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
About this vulnerability
Apple iOS contains a type confusion vulnerability when processing maliciously crafted web content leading to code execution.
Summary: CISA's KEV catalog, as of .
- CISA added CVE-2022-42856 to its Known Exploited Vulnerabilities (KEV) catalog on 14 Dec 2022.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 4 Jan 2023.
- The CVE record was published on 15 Dec 2022, 1 day after it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 8.8 (High), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 8.5% (percentile 95), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of . About the data.
Description
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..
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
Weakness
- CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| Added to CISA KEV | |
| CVE record published | |
| CISA due date for the required action | |
| CVE record last updated |
References
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- support.apple.com
- 20221220 APPLE-SA-2022-12-13-2 iOS 15.7.2 and iPadOS 15.7.2
- 20221220 APPLE-SA-2022-12-13-4 macOS Ventura 13.1
- 20221220 APPLE-SA-2022-12-13-3 iOS 16.1.2
- 20221220 APPLE-SA-2022-12-13-7 tvOS 16.2
- 20221220 APPLE-SA-2022-12-13-9 Safari 16.2
- [oss-security] 20221226 WebKitGTK and WPE WebKit Security Advisory WSA-2022-0011
- security.gentoo.org
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