CVE-2023-32435
HighExploitedPublic exploitwebkitgtk: memory corruption issue leading to arbitrary code execution
Published Dec 28, 2023 · Updated Aug 7, 2026 · Also known as DEBIAN-CVE-2023-32435, UBUNTU-CVE-2023-32435
Key Facts
Patch immediately- CVE-2023-32435 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 Mar 27, 2023. Public exploit code is available.
- EPSS estimates a 23% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ipados 15.7.7, Iphone OS 15.7.7, macOS 13.3.
- 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)
23%
Higher than 97.7% 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-2023-32435 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Ventura 13.3, Safari 16.4, iOS 16.4 and iPadOS 16.4, iOS 15.7.7 and iPadOS 15.7.7. Processing 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 15.7.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jun 23, 2023 | Jul 14, 2023 | Not reported |
| Industry KEV feed | Mar 27, 2023 | Jul 14, 2023 | Not reported |
| CIRCL KEV | Jun 23, 2023 | Jul 14, 2023 | Not reported |
| ENISA EUVD | Jun 23, 2023 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
324 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SafariApple | >= unspecified | 16.4 |
| IpadosApple | See advisory | 15.7.7 |
| Iphone OSApple | See advisory | 15.7.7 |
| macOSApple | >= unspecified | 13.3 |
| webkit2gtkdebian | See advisory | 2.40.1-1~deb11u1 |
Patched Releases
Ipados
15.7.7
Iphone OS
15.7.7
macOS
13.3
Safari
16.4
iOS and iPadOS
15.7, 16.4
libjavascriptcoregtk-4_0-18
2.40.5-150000.3.144.1, 2.40.5-150200.78.1, 2.40.5-150400.4.45.3, 2.40.5-2.146.1
libjavascriptcoregtk-4_0-18-32bit
2.40.5-150400.4.45.3, 2.40.5-2.146.1
libjavascriptcoregtk-4_0-18-64bit
2.40.5-150400.4.45.3
libjavascriptcoregtk-4_1-0
2.40.5-150400.4.45.3
libjavascriptcoregtk-4_1-0-32bit
2.40.5-150400.4.45.3
libjavascriptcoregtk-4_1-0-64bit
2.40.5-150400.4.45.3
libjavascriptcoregtk-6_0-1
2.40.5-150400.4.45.3
libwebkit2gtk-4_0-37
2.40.5-150000.3.144.1, 2.40.5-150200.78.1, 2.40.5-150400.4.45.3, 2.40.5-2.146.1
libwebkit2gtk-4_0-37-32bit
2.40.5-150400.4.45.3
libwebkit2gtk-4_0-37-64bit
2.40.5-150400.4.45.3
libwebkit2gtk-4_1-0
2.40.5-150400.4.45.3
libwebkit2gtk-4_1-0-32bit
2.40.5-150400.4.45.3
libwebkit2gtk-4_1-0-64bit
2.40.5-150400.4.45.3
libwebkit2gtk3-lang
2.40.5-150000.3.144.1, 2.40.5-150200.78.1, 2.40.5-2.146.1
libwebkitgtk-6_0-4
2.40.5-150400.4.45.3
typelib-1_0-JavaScriptCore-4_0
2.40.5-150000.3.144.1, 2.40.5-150200.78.1, 2.40.5-150400.4.45.3, 2.40.5-2.146.1
typelib-1_0-JavaScriptCore-4_1
2.40.5-150400.4.45.3
typelib-1_0-JavaScriptCore-6_0
2.40.5-150400.4.45.3
typelib-1_0-WebKit-6_0
2.40.5-150400.4.45.3
typelib-1_0-WebKit2-4_0
2.40.5-150000.3.144.1, 2.40.5-150200.78.1, 2.40.5-150400.4.45.3, 2.40.5-2.146.1
Timeline
Added to Industry KEV feed
Mar 27, 2023
Added to CISA KEV
Jun 23, 2023
Added to CIRCL KEV
Jun 23, 2023
Added to ENISA EUVD
Jun 23, 2023
Publicly disclosed
Dec 28, 2023
Last updated
Aug 7, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
- CWE-787 Out-of-bounds Write
References
- advisoryRHSA-2023:4201
- advisoryRHSA-2023:4202
- advisoryRHSA-2025:10364
- advisoryhttps://bugzilla.suse.com/1211658
- advisoryhttps://bugzilla.suse.com/1211659
FAQ
Common Questions.
A memory corruption issue was addressed with improved state management.
Affected: Safari (Apple) versions >= unspecified; 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 Mar 27, 2023.
Yes. It was added on Jun 23, 2023 with a federal remediation due date of Jul 14, 2023.
Public exploit code is available.
Fixed versions are available, including Ipados 15.7.7, Iphone OS 15.7.7, macOS 13.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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