The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:4752 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and     portability.

    Security Fix(es):

    * firefox: thunderbird: Privilege escalation in Firefox Updater (CVE-2025-2817)

    * firefox: thunderbird: Unsafe attribute access during XPath parsing (CVE-2025-4087)

    * firefox: thunderbird: Process isolation bypass using javascript: URI links in cross-origin frames     (CVE-2025-4083)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and     Thunderbird 128.10 (CVE-2025-4091)

    * firefox: thunderbird: Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10     (CVE-2025-4093)

    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.

Detections

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RHEL 9 : firefox (RHSA-2025:4752)

critical Nessus Plugin ID 235618

Version 1.1