8.8

CVE-2022-42856: Apple iOS Type Confusion Vulnerability

CVSS: 8.8v3.1HighKEVAnalyzed
AliasesSUSE-SU-2022:4634-1RHSA-2023:0016RHSA-2023:0021
Published 15-12-2022Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2022-42856 is a high (CVSS 8.8) Type Confusion vulnerability in Apple iOS. It is known to be exploited: CISA lists it, first on 14-12-2022. EPSS estimates a 8.52% chance of exploitation in the next 30 days, higher than 94.9% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
8.52%
0%100%
Low · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 4
DLA-3274-1DSA-5308-1DSA-5309-1MGASA-2022-0486RHSA-2025:10364SUSE-SU-2022:4641-1

Timeline

  1. 14-12-2022
    Added to CISA KEVApple iOS Type Confusion Vulnerability
  2. 15-12-2022
    PublishedVulnerability first disclosed.
  3. 04-01-2023
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

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..

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

8.52%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 8.52% on 18-09-2026

18-09-202618-10-2026
EPSS score
8.52%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
14-12-2022
Federal due date
04-01-2023

CISA required action

Apply updates per vendor instructions. support.apple.com/en-us/HT213516 nvd.nist.gov/vuln/detail/CVE-2022-42856

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat9 products
  • webkit2gtk3< 0:2.36.7-1.el8_7.1 | < 0:2.36.7-1.el9_1.1
  • webkit2gtk3-debuginfo< 0:2.36.7-1.el8_7.1 | < 0:2.36.7-1.el9_1.1
  • webkit2gtk3-debugsource< 0:2.36.7-1.el8_7.1 | < 0:2.36.7-1.el9_1.1
  • webkit2gtk3-devel< 0:2.36.7-1.el8_7.1 | < 0:2.36.7-1.el9_1.1
  • webkit2gtk3-devel-debuginfo< 0:2.36.7-1.el8_7.1 | < 0:2.36.7-1.el9_1.1
Apple5 products
  • ipados< 15.7.2
  • iphone_os< 15.7.2 | ≥ 16.0, < 16.1.2
  • macos< 13.1
  • safari< 16.2
  • tvos≥ unspecified, < 16.2 | ≥ unspecified, < 13.1 | ≥ unspecified, < 15.7 | ≥ unspecified, < 16.1 | < 16.2
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.38.3-0ubuntu0.20.04.1 | < 2.38.3-0ubuntu0.22.04.1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Opensuse3 products
  • webkit2gtk3-soup2&distro=openSUSE Leap 15.4< 2.38.3-150400.4.25.1
  • webkit2gtk3&distro=openSUSE Leap 15.4< 2.38.3-150400.4.25.1
  • webkit2gtk4&distro=openSUSE Leap 15.4< 2.38.3-150400.4.25.1
Suse3 products
  • webkit2gtk3-soup2&distro=SUSE Linux Enterprise Module for Basesystem 15 SP4< 2.38.3-150400.4.25.1
  • webkit2gtk3&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP4< 2.38.3-150400.4.25.1
  • webkit2gtk4&distro=SUSE Linux Enterprise Module for Development Tools 15 SP4< 2.38.3-150400.4.25.1
Debian2 products
  • webkit2gtk< 2.38.3-1
  • wpewebkit< 2.38.3-1

6 vendors · 27 products

References

29 links
Show all 29 references