CVE-2023-32439

Name: CVE-2023-32439
Creator: NVD / NIST
Published: 2023-06-23T18:15:13.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 23.79%

Last modified Jun 17, 2026

CVE-2023-32439 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A type confusion issue was addressed with improved checks. This issue is fixed in iOS 16.5.1 and iPadOS 16.5.1, iOS 15.7.7 and iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1. CISA has confirmed active exploitation in the wild. EPSS estimates a 23.79% chance of exploitation in the next 30 days.

Description

A type confusion issue was addressed with improved checks. This issue is fixed in iOS 16.5.1 and iPadOS 16.5.1, iOS 15.7.7 and iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1. 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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

23.79%

97.5th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jul 14, 2023.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Safari	< 16.5.1
Apple	Ipados	< 15.7.7
Apple	Ipados	>= 16.0, < 16.5.1
Apple	Iphone Os	< 15.7.7
Apple	Iphone Os	>= 16.0, < 16.5.1
Apple	Macos	>= 13.0, < 13.4.1
Webkitgtk	Webkitgtk\+	< 2.42.3

References

https://security.gentoo.org/glsa/202401-04Third Party Advisory
https://support.apple.com/en-us/HT213811Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213813Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213814Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213816Release Notes, Vendor Advisory
https://support.apple.com/kb/HT213814Vendor Advisory
https://support.apple.com/kb/HT213816Vendor Advisory
https://security.gentoo.org/glsa/202401-04Third Party Advisory
https://support.apple.com/en-us/HT213811Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213813Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213814Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT213816Release Notes, Vendor Advisory
https://support.apple.com/kb/HT213814Vendor Advisory
https://support.apple.com/kb/HT213816Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32439US Government Resource

Timeline

Published: Jun 23, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-32439?

How severe is CVE-2023-32439?

CVE-2023-32439 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 23.79% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-32439?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-32439?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST