A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6,     iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously     crafted web content may lead to an unexpected Safari crash. (CVE-2026-64718)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Apple iOS running on the mobile device is prior to 26.6. It is, therefore, affected by multiple vulnerabilities.

The remote host is running a version of macOS / Mac OS X that is 26.x prior to 26.6. It is, therefore, affected by multiple vulnerabilities:

  - A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6,     iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted     web content may lead to an unexpected Safari crash. (CVE-2026-64783)

  - A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 26.6     and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6,     watchOS 26.6. An app may be able to cause unexpected system termination. (CVE-2026-64775)

  - Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue     affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the     issue. (CVE-2026-23918)

  - The issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14.8.8, macOS     Tahoe 26.6. A malicious app may be able to corrupt memory of a system process. (CVE-2026-28911)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS     Tahoe 26.6. A user may be able to elevate privileges. (CVE-2026-28912)

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

ID	Name	Product	Family	Type	Severity
340759	Linux Distros Unpatched Vulnerability : CVE-2026-64718	Nessus	Misc.	Local	medium
330150	Apple iOS < 26.6 Multiple Vulnerabilities (128066)	Nessus	Mobile Devices	Local	critical
330144	macOS 26.x < 26.6 Multiple Vulnerabilities (128067)	Nessus	MacOS X Local Security Checks	Local	critical

Detections

Analytics

CVE-2026-64718

medium

Tenable Plugins

medium

critical

critical