This issue was addressed through improved state 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, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

rocky_linux RLSA-2026:74084: RLSA-2026:74084: webkit2gtk3 security update (Critical)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-40db9b80a2 advisory.

    Update to 2.54.0:

     * Switch web process compositor to use Skia instead of TextureMapper.
     * Improved damage handling that is now also used during the composition to limit the composited areas.
     * Implement GPU atlas creation and replay substitution for batched raster image uploads.
     * Media capability reporting is more accurate.
     * Video decoding limits are now respected in media capabilities queries.
     * Add new improved API for page favicons.
     * Add magnification property to WebKitWebView to handle visual scaling.
     * Add new API to allow setting a per-navigation custom User-Agent to WebKitWebsitePolicies.
     * Remove the option to use cairo for 2D rendering.

    WebKit Security fixes from 2.54.0: CVE-2026-84635, CVE-2026-64753, CVE-2026-64715, CVE-2026-64778,     CVE-2026-64779, CVE-2026-64780, CVE-2026-64782, CVE-2026-64784, CVE-2026-65331, CVE-2026-65332,     CVE-2026-65333, CVE-2026-65334, CVE-2026-65335, CVE-2026-65336, CVE-2026-65337, CVE-2026-65338,     CVE-2026-65340, CVE-2026-65341, CVE-2026-65351, CVE-2026-78376, CVE-2026-83596.

    WebKit security fixes from 2.52.6: CVE-2026-43804, CVE-2026-64713, CVE-2026-64728, CVE-2026-64730,     CVE-2026-64757, CVE-2026-64783

    This update also fixes a couple hundred or so ANGLE CVEs and several dozen Skia CVEs.

    This update [breaks some styles in Evolution](https://bugs.webkit.org/show_bug.cgi?id=322568). Sorry about     that.








Tenable has extracted the preceding description block directly from the Fedora 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 webkitgtk4 installed on the remote host is prior to 2.52.6-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3917 advisory.

    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)

    A memory corruption vulnerability was addressed with improved locking. 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-2026-64779)

    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. Processing maliciously crafted web content may     lead to an unexpected Safari crash. (CVE-2026-64780)

    An out-of-bounds access issue was addressed with improved bounds checking. 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-2026-64784)

    This issue was addressed through improved state 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 Safari crash. (CVE-2026-65331)

    This issue was addressed through improved state 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 Safari crash. (CVE-2026-65333)

    A memory corruption issue was addressed with improved state 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 Safari crash. (CVE-2026-65334)

    This issue was addressed through improved state 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 Safari crash. (CVE-2026-65335)

    This issue was addressed through improved state 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 Safari crash. (CVE-2026-65336)

    This issue was addressed through improved state 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 Safari crash. (CVE-2026-65337)

    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-2026-65338)

    This issue was addressed through improved state 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 Safari crash. (CVE-2026-65340)

    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 memory corruption. (CVE-2026-65341)

    A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to     improper memory handling and result in memory corruption. (CVE-2026-78376)

    A flaw was found in WebKitGTK. Processing malicious web content can cause memory corruption due to     improper memory handling. (CVE-2026-83596)

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

  - This issue was addressed through improved state 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, visionOS 27. Processing     maliciously crafted web content may lead to an unexpected Safari crash. (CVE-2026-65333)

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 26.6.1. 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 out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari     26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Processing     maliciously crafted web content may lead to memory corruption. (CVE-2026-65391)

  - The issue was addressed with improved memory handling. This issue is fixed in iOS 26.6.1 and iPadOS     26.6.1, macOS Sequoia 15.8, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. An app may be able to     cause unexpected system termination or corrupt kernel memory. (CVE-2026-28935, CVE-2026-65330)

  - 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, tvOS 27,     visionOS 27, watchOS 27. 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, visionOS 27. 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, tvOS 27,     visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to an unexpected process     crash. (CVE-2026-64715)

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 18.7.10. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Type	Severity
353421	RHEL 8 : webkit2gtk3 (RHSA-2026:74084)	Nessus	Red Hat Local Security Checks	Local	critical
350085	Fedora 44 : webkitgtk (2026-40db9b80a2)	Nessus	Fedora Local Security Checks	Local	critical
345783	Amazon Linux 2 : webkitgtk4 (ALAS-2026-3917)	Nessus	Amazon Linux Local Security Checks	Local	high
340757	Linux Distros Unpatched Vulnerability : CVE-2026-65333	Nessus	Misc.	Local	medium
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
335967	Apple iOS < 18.7.10 Multiple Vulnerabilities (148287)	Nessus	Mobile Devices	Local	critical

Detections

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CVE-2026-65333

medium

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critical

critical

high

medium

high

high

critical