CVE-2023-32439
Apple Multiple Products WebKit Type Confusion Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 14 July 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 23.97% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 23 June 2023 · due 14 July 2023
- Weakness
- CWE-843
- Affected
- apple/safari · apple/ipados · apple/iphone os · apple/macos · webkitgtk/webkitgtk\+
- Source
- product-security@apple.com
EPSS 24.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://support.apple.com/en-us/HT213813, https://support.apple.com/en-us/HT213811, https://support.apple.com/en-us/HT213814, https://support.apple.com/en-us/HT213816; https://nvd.nist.gov/vuln/detail/CVE-2023-32439
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.