Apple watchOS up to 18.2 Media File memory corruption

Summaryinfo

A vulnerability classified as critical has been found in Apple watchOS. This affects an unknown part of the component Media File Handler. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2025-43372. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple watchOS and classified as critical. Affected by this vulnerability is some unknown processing of the component Media File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The issue was addressed with improved input validation. This issue is fixed in tvOS 26, watchOS 26, visionOS 26, macOS Tahoe 26, iOS 26 and iPadOS 26. Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory.

The advisory is shared at support.apple.com. This vulnerability is known as CVE-2025-43372 since 04/16/2025. 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 $0-$5k at the moment (estimation calculated on 11/05/2025).

The vulnerability scanner Nessus provides a plugin with the ID 272227 (macOS 14.x < 14.8.2 Multiple Vulnerabilities (125636)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 26.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (272227) and CERT Bund (WID-SEC-2025-2475). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Apple macOS

Productinfo

Type

• Smartwatch Operating System

Vendor

• Apple

Name

• watchOS

Version

• 2.2.2
• 3
• 3.1
• 3.1.1
• 3.1.3
• 3.2
• 3.2.2
• 3.2.3
• 4.0
• 4.2
• 4.2.2
• 4.2.3
• 4.3
• 4.3.1
• 4.3.2
• 4.4.2
• 5.0
• 5.1
• 5.1.3
• 5.2
• 5.2.1
• 5.3
• 5.3.2
• 5.3.7
• 5.3.9
• 6.0
• 6.1
• 6.1.2
• 6.2
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.8
• 6.2.9
• 7.0
• 7.0.3
• 7.1
• 7.2
• 7.3
• 7.3.2
• 7.3.3
• 7.4
• 7.4.1
• 7.5
• 7.6
• 7.6.2
• 8.0
• 8.1
• 8.3
• 8.4
• 8.5
• 8.6
• 8.7
• 8.8.1
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5
• 9.5.1
• 9.5.2
• 9.6
• 10.0
• 10.5
• 10.15.0
• 10.15.1
• 12.1
• 13.0
• 13.7
• 14.0
• 15
• 15.1
• 18
• 18.1
• 18.2

License

• commercial

Website

• Vendor: https://www.apple.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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