CVE-2023-32439
Published: June 23, 2023
Official Description
Apple iOS, iPadOS, macOS, and Safari WebKit contain a type confusion vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
CISA KEV Advisory
Apple Multiple Products WebKit Type Confusion Vulnerability
Apple iOS, iPadOS, macOS, and Safari WebKit contain a type confusion vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Apply updates per vendor instructions.
Risk Analysis
This high-severity type confusion vulnerability in Apple iOS, iPadOS, macOS, and Safari WebKit can lead to code execution when processing maliciously crafted web content. The confirmed in-the-wild exploitation and inclusion in CISA's KEV catalog make this an urgent concern, despite a low EPSS score.
This vulnerability is actively exploited in the wild and is included in CISA's Known Exploited Vulnerabilities catalog.
Apply all available security updates for Apple iOS, iPadOS, macOS, and Safari. Exercise caution when browsing the web and avoid visiting untrusted websites.
Technical Analysis
CVE-2023-32439 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2023-32439 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-32439 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1