A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected process termination.

The version of webkitgtk4 installed on the remote host is prior to 2.52.6-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3891 advisory.

    The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS     18.7.10. Processing maliciously crafted web content may lead to an unexpected Safari crash.
    (CVE-2026-28984)

    This issue was addressed through improved state management. This issue is fixed in Safari 26.6, iOS 26.6     and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6. Visiting a website may lead to an app denial-of-service.
    (CVE-2026-43804)

    This issue was addressed with improved checks. 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. Websites may know if the user has visited     a given link. (CVE-2026-64713)

    An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari     26.6, iOS 18.7.10 and iPadOS 18.7.10, 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-2026-64719)

    A permissions issue was addressed with improved validation. 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. Maliciously crafted web content     may violate iframe sandboxing policy. (CVE-2026-64728)

    The issue was addressed with improved UI. 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. Visiting a website that frames malicious content     may lead to UI spoofing. (CVE-2026-64730)

    A memory corruption issue was addressed with improved state 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-2026-64757)

    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 use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may     lead to an unexpected process termination. (CVE-2026-64787)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:59326 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:59325 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:58564 advisory.

    WebKitGTK+ is port of the WebKit portable web rendering engine to the GTK+ platform. These packages     provide WebKitGTK+ for GTK+ 3.

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:58550 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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     26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may     lead to an unexpected process termination. (CVE-2026-64787)

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:57348 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The version of Apple iOS running on the mobile device is prior to 26.6.1. 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 26.6.2. It is, therefore, affected by multiple vulnerabilities:

  - An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6.1 and     iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing an image may lead to arbitrary code execution.
    (CVE-2026-65346)

  - A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari     26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing     maliciously crafted web content may lead to memory corruption. (CVE-2026-43794)

  - The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10     and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web     content may lead to an unexpected Safari crash. (CVE-2026-43795, CVE-2026-65338)

  - A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing     maliciously crafted web content may lead to an unexpected process crash. (CVE-2026-64715)

  - The issue was addressed with improved checks. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS     18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Visiting a maliciously crafted website may leak     sensitive data. (CVE-2026-64778)

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
341901	Amazon Linux 2 : webkitgtk4, --advisory ALAS2-2026-3891 (ALAS-2026-3891)	Nessus	Amazon Linux Local Security Checks	Local	high
339456	RHEL 8 : webkit2gtk3 (RHSA-2026:59326)	Nessus	Red Hat Local Security Checks	Local	high
339455	RHEL 8 : webkit2gtk3 (RHSA-2026:59325)	Nessus	Red Hat Local Security Checks	Local	high
339096	RHEL 7 : webkitgtk4 (RHSA-2026:58564)	Nessus	Red Hat Local Security Checks	Local	high
339052	RHEL 9 : webkit2gtk3 (RHSA-2026:58550)	Nessus	Red Hat Local Security Checks	Local	high
338295	Linux Distros Unpatched Vulnerability : CVE-2026-64787	Nessus	Misc.	Local	medium
338236	RHEL 8 : webkit2gtk3 (RHSA-2026:57348)	Nessus	Red Hat Local Security Checks	Local	high
335969	Apple iOS < 26.6.1 Multiple Vulnerabilities (148282)	Nessus	Mobile Devices	Local	high
335968	macOS 26.x < 26.6.2 Multiple Vulnerabilities (148281)	Nessus	MacOS X Local Security Checks	Local	high

Detections

Analytics

CVE-2026-64787

medium

Tenable Plugins

high

high

high

high

high

medium

high

high

high