CVE-2025-43221: tvos Out-of-bounds Read — Fix

Description

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6. Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
apple	ipados	< 18.6
apple	iphone_os	< 18.6
apple	macos	< 15.6
apple	tvos	< 18.6
apple	visionos	< 2.6

References

Advisories & Patches

https://support.apple.com/en-us/124147 https://support.apple.com/en-us/124149 https://support.apple.com/en-us/124153 https://support.apple.com/en-us/124154

Other References

http://seclists.org/fulldisclosure/2025/Jul/30 http://seclists.org/fulldisclosure/2025/Jul/32 http://seclists.org/fulldisclosure/2025/Jul/36 http://seclists.org/fulldisclosure/2025/Jul/37

Frequently Asked Questions

What is CVE-2025-43221? +

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6. Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-43221? +

CVE-2025-43221 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-43221? +

CVE-2025-43221 affects products from apple, specifically: ipados, iphone_os, macos, tvos, visionos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43221? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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