CVE-2022-42856
HighExploitedPublic exploitwebkit2gtk - security update
Published Aug 9, 2023 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2022-42856, SUSE-SU-2022:4634-1, UBUNTU-CVE-2022-42856
Key Facts
Patch immediately- CVE-2022-42856 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Safari (Apple), Ipados (Apple), Iphone OS (Apple) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 30, 2022. Public exploit code is available.
- EPSS estimates a 8.5% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ipados 15.7.2, Iphone OS 15.7.2, Macos 13.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
8.5%
Higher than 94.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-42856 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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..
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Dec 14, 2022 | Jan 4, 2023 | Not reported |
| Industry KEV feed | Nov 30, 2022 | Jan 4, 2023 | Not reported |
| CIRCL KEV | Dec 14, 2022 | Jan 4, 2023 | Not reported |
| ENISA EUVD | Dec 14, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
350 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SafariApple | See advisory | 16.2 |
| IpadosApple | See advisory | 15.7.2 |
| Iphone OSApple | See advisory | 15.7.2 |
| MacosApple | See advisory | 13.1 |
| tvOSApple | >= unspecified | 16.2 |
Patched Releases
Ipados
15.7.2
Iphone OS
15.7.2
Macos
13.1
Safari
16.2
tvOS
16.2, 13.1, 15.7, 16.1
libjavascriptcoregtk-4_0-18
2.38.3-150000.3.125.1, 2.38.3-150200.57.1, 2.38.3-150400.4.25.1, 2.38.3-2.123.1
libjavascriptcoregtk-4_0-18-32bit
2.38.3-150400.4.25.1
libjavascriptcoregtk-4_1-0
2.38.3-150400.4.25.1
libjavascriptcoregtk-4_1-0-32bit
2.38.3-150400.4.25.1
libjavascriptcoregtk-5_0-0
2.38.3-150400.4.25.1
libwebkit2gtk-4_0-37
2.38.3-150000.3.125.1, 2.38.3-150200.57.1, 2.38.3-150400.4.25.1, 2.38.3-2.123.1
libwebkit2gtk-4_0-37-32bit
2.38.3-150400.4.25.1
libwebkit2gtk-4_1-0
2.38.3-150400.4.25.1
libwebkit2gtk-4_1-0-32bit
2.38.3-150400.4.25.1
libwebkit2gtk-5_0-0
2.38.3-150400.4.25.1
libwebkit2gtk3-lang
2.38.3-150000.3.125.1, 2.38.3-150200.57.1, 2.38.3-2.123.1
typelib-1_0-JavaScriptCore-4_0
2.38.3-150000.3.125.1, 2.38.3-150200.57.1, 2.38.3-150400.4.25.1, 2.38.3-2.123.1
typelib-1_0-JavaScriptCore-4_1
2.38.3-150400.4.25.1
typelib-1_0-JavaScriptCore-5_0
2.38.3-150400.4.25.1
typelib-1_0-WebKit2-4_0
2.38.3-150000.3.125.1, 2.38.3-150200.57.1, 2.38.3-150400.4.25.1, 2.38.3-2.123.1
typelib-1_0-WebKit2-4_1
2.38.3-150400.4.25.1
typelib-1_0-WebKit2-5_0
2.38.3-150400.4.25.1
typelib-1_0-WebKit2WebExtension-4_0
2.38.3-150000.3.125.1, 2.38.3-150200.57.1, 2.38.3-150400.4.25.1, 2.38.3-2.123.1
typelib-1_0-WebKit2WebExtension-4_1
2.38.3-150400.4.25.1
typelib-1_0-WebKit2WebExtension-5_0
2.38.3-150400.4.25.1
Timeline
Added to Industry KEV feed
Nov 30, 2022
Added to CISA KEV
Dec 14, 2022
Added to CIRCL KEV
Dec 14, 2022
Added to ENISA EUVD
Dec 14, 2022
Publicly disclosed
Aug 9, 2023
Last updated
Aug 4, 2026
Weakness Type
- CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
References
- advisoryhttps://access.redhat.com/articles/11258
- advisoryhttps://access.redhat.com/errata/RHBA-2022:9099
- advisoryhttps://access.redhat.com/errata/RHSA-2022:9098
- advisoryRHSA-2023:0016
- advisoryRHSA-2023:0021
FAQ
Common Questions.
A type confusion issue was addressed with improved state handling.
Affected: Safari (Apple); Ipados (Apple); Iphone OS (Apple), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 30, 2022.
Yes. It was added on Dec 14, 2022 with a federal remediation due date of Jan 4, 2023.
Public exploit code is available.
Fixed versions are available, including Ipados 15.7.2, Iphone OS 15.7.2, Macos 13.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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