A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-b07cd2cae2 advisory.

     * Fix seeking and looping of media elements that set the loop property.
     * Fix several crashes and rendering issues.
     * Fix CVE-2025-13947, CVE-2025-43458, CVE-2025-66287


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 remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:22790 advisory.

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

    Security Fix(es):

    * webkit: WebKitGTK / WPE WebKit: Out-of-bounds read and integer underflow vulnerability leading to DoS     (CVE-2025-13502)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2023-43000)

    * webkitgtk: A website may exfiltrate image data cross-origin (CVE-2025-43392)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-43419)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43425)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43427)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43429)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43430)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-43431)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43432)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43434)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43440)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43443)

    * webkitgtk: A malicious website may exfiltrate data cross-origin (CVE-2025-43480)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43421)

    * webkit: WebKitGTK: Remote user-assisted information disclosure via file drag-and-drop (CVE-2025-13947)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43458)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-66287)

    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-2025:22789 advisory.

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

    Security Fix(es):

    * webkit: WebKitGTK / WPE WebKit: Out-of-bounds read and integer underflow vulnerability leading to DoS     (CVE-2025-13502)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2023-43000)

    * webkitgtk: A website may exfiltrate image data cross-origin (CVE-2025-43392)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-43419)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43425)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43427)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43429)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43430)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-43431)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43432)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43434)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43440)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43443)

    * webkitgtk: A malicious website may exfiltrate data cross-origin (CVE-2025-43480)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43421)

    * webkit: WebKitGTK: Remote user-assisted information disclosure via file drag-and-drop (CVE-2025-13947)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43458)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-66287)

    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 flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due     to improper memory handling. (CVE-2025-66287)

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

ID	Name	Product	Family	Severity
277623	Fedora 43 : webkitgtk (2025-b07cd2cae2)	Nessus	Fedora Local Security Checks	high
277612	RHEL 9 : webkit2gtk3 (RHSA-2025:22790)	Nessus	Red Hat Local Security Checks	high
277608	RHEL 8 : webkit2gtk3 (RHSA-2025:22789)	Nessus	Red Hat Local Security Checks	high
277489	Linux Distros Unpatched Vulnerability : CVE-2025-66287	Nessus	Misc.	medium

Detections

Analytics

CVE-2025-66287

high

Tenable Plugins

high

high

high

medium