HOMEVULNERABILITIESCVE-2023-32439
HIGHCISA KEVIN THE WILD

CVE-2023-32439

Published: June 23, 2023

EPSS:0.99%probability of exploitation in 30 daysPercentile:76.5th

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.

NVD Source

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.

Added to KEV: 2023-06-23Federal patch deadline: 2023-07-14
Required Action (CISA)

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.

Recommended Action

Apply all available security updates for Apple iOS, iPadOS, macOS, and Safari. Exercise caution when browsing the web and avoid visiting untrusted websites.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

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

Mentioned vendors (from description):
Apple
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
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All References (2)

Quick Facts

CVE IDCVE-2023-32439
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)0.99%
PublishedJun 23, 2023

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
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.