Apple tvOS Web memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in Apple tvOS. Affected is an unknown function of the component Web Handler. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2025-31278. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple tvOS (the affected version is unknown) and classified as critical. This issue affects an unknown code of the component Web Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The issue was addressed with improved memory handling. This issue is fixed in iPadOS 17.7.9, watchOS 11.6, visionOS 2.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6. Processing maliciously crafted web content may lead to memory corruption.

It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2025-31278 since 03/27/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/25/2025).

The vulnerability scanner Nessus provides a plugin with the ID 245574 (Fedora 42 : webkitgtk (2025-61ca72f430)), 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 (245574) and CERT Bund (WID-SEC-2025-1703). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• IGEL OS
• Open Source WebKitGTK

Productinfo

Type

• Digital Media Player

Vendor

• Apple

Name

• tvOS

License

• commercial

Website

• Vendor: https://www.apple.com/

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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