Apple Safari Floats type confusion

Summaryinfo

A vulnerability, which was classified as critical, has been found in Apple Safari. This issue affects some unknown processing of the component Floats Handler. This manipulation causes type confusion. This vulnerability is tracked as CVE-2025-24213. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Safari (affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Floats Handler. The manipulation with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

This issue was addressed with improved handling of floats. This issue is fixed in tvOS 18.4, Safari 18.4, iPadOS 17.7.6, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4. A type confusion issue could lead to memory corruption.

The advisory is shared at support.apple.com. This vulnerability is known as CVE-2025-24213 since 01/17/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/25/2025).

The vulnerability scanner Nessus provides a plugin with the ID 234140 (Debian dsa-5899 : gir1.2-javascriptcoregtk-4.0 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (234140) and CERT Bund (WID-SEC-2025-0728). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• SUSE Linux
• Oracle Linux
• Gentoo Linux
• RESF Rocky Linux
• Ubuntu Linux
• Red Hat OpenShift
• Open Source WebKitGTK

Productinfo

Type

• Web Browser

Vendor

• Apple

Name

• Safari

License

• commercial

Website

• Vendor: https://www.apple.com/

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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