The version of mozilla-firefox installed on the remote host is prior to 128.7.0esr. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2025-035-01 advisory.

    New mozilla-firefox packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the mozilla-firefox 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 Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-13bbd34b51 advisory.

    - Updated to latest upstream (135.0)

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 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:1135 advisory.

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

    Security Fix(es):

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and     Thunderbird 128.7 (CVE-2025-1017)

    * firefox: thunderbird: Use-after-free in Custom Highlight (CVE-2025-1010)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20,     Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7 (CVE-2025-1016)

    * firefox: thunderbird: Potential opening of private browsing tabs in normal browsing windows     (CVE-2025-1013)

    * firefox: thunderbird: A bug in WebAssembly code generation could result in a crash (CVE-2025-1011)

    * firefox: thunderbird: Use-after-free in XSLT (CVE-2025-1009)

    * firefox: thunderbird: Certificate length was not properly checked (CVE-2025-1014)

    * firefox: thunderbird: Use-after-free during concurrent delazification (CVE-2025-1012)

    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-2025:1140 advisory.

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

    Security Fix(es):

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and     Thunderbird 128.7 (CVE-2025-1017)

    * firefox: thunderbird: Use-after-free in Custom Highlight (CVE-2025-1010)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20,     Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7 (CVE-2025-1016)

    * firefox: thunderbird: Potential opening of private browsing tabs in normal browsing windows     (CVE-2025-1013)

    * firefox: thunderbird: A bug in WebAssembly code generation could result in a crash (CVE-2025-1011)

    * firefox: thunderbird: Use-after-free in XSLT (CVE-2025-1009)

    * firefox: thunderbird: Certificate length was not properly checked (CVE-2025-1014)

    * firefox: thunderbird: Use-after-free during concurrent delazification (CVE-2025-1012)

    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 Ubuntu 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7663-1 advisory.

    Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially     crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of     service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute     arbitrary code.

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

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

ID	Name	Product	Family	Published	Updated	Severity
214968	Slackware Linux 15.0 / current mozilla-firefox Multiple Vulnerabilities (SSA:2025-035-01)	Nessus	Slackware Local Security Checks	2/4/2025	2/7/2025	critical
215076	Fedora 41 : firefox (2025-13bbd34b51)	Nessus	Fedora Local Security Checks	2/7/2025	3/6/2025	critical
215106	RHEL 8 : firefox (RHSA-2025:1135)	Nessus	Red Hat Local Security Checks	2/7/2025	6/5/2025	critical
215108	RHEL 9 : firefox (RHSA-2025:1140)	Nessus	Red Hat Local Security Checks	2/7/2025	6/5/2025	critical
242691	Ubuntu 22.04 LTS : Thunderbird vulnerabilities (USN-7663-1)	Nessus	Ubuntu Local Security Checks	7/25/2025	7/25/2025	critical

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