The issue was addressed with improved memory handling. This issue is fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3, Safari 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.

The remote host is running a version of macOS / Mac OS X that is 26.x prior to 26.3. It is, therefore, affected by multiple vulnerabilities:

  - libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small     document that is submitted for parsing. (CVE-2025-59375)

  - The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.4, iOS     18.7.5 and iPadOS 18.7.5, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to crash a system     process. (CVE-2026-20605)

  - A path handling issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.4,     macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to gain root privileges. (CVE-2026-20614)

  - A path handling issue was addressed with improved validation. This issue is fixed in iOS 26.3 and iPadOS     26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, visionOS 26.3. An app may be able to gain root privileges.
    (CVE-2026-20615)

  - An issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.3.
    An app may be able to access user-sensitive data. (CVE-2026-20618)

Note that Nessus has not tested for these issues but has instead relied only on the operating system's self-reported version number.

The version of Apple iOS running on the mobile device is prior to 26.3. It is, therefore, affected by multiple vulnerabilities.

The version of Apple iOS running on the mobile device is prior to 18.7.5. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Severity
298694	macOS 26.x < 26.3 Multiple Vulnerabilities (126348)	Nessus	MacOS X Local Security Checks	high
298693	Apple iOS < 26.3 Multiple Vulnerabilities (126346)	Nessus	Mobile Devices	high
298674	Apple iOS < 18.7.5 Multiple Vulnerabilities (126347)	Nessus	Mobile Devices	high

Detections

Analytics

CVE-2026-20635

medium

Tenable Plugins

high

high

high