The version of Thunderbird ESR installed on the remote Windows host is prior to 128.6. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-05 advisory.

  - Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5,     Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2025-0242)

  - The WebChannel API, which is used to transport various information across processes, did not check the     sending principal but rather accepted the principal being sent. This could have led to privilege     escalation attacks. (CVE-2025-0237)

  - Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to     a potentially exploitable crash. (CVE-2025-0238)

  - When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to     an insecure site. (CVE-2025-0239)

  - Parsing a JavaScript module as JSON could under some circumstances cause cross-compartment access, which     may result in a use-after-free. (CVE-2025-0240)

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 Thunderbird installed on the remote Windows host is prior to 134.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-04 advisory.

  - Memory safety bugs present in Firefox 133 and Thunderbird 133. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. (CVE-2025-0247)

  - Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5,     Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2025-0242)

  - The Matrix specification demands homeservers to perform validation of the server-name and media-id     components of MXC URIs with the intent to prevent path traversal. However, it is not mentioned that a     similar check must also be performed on the client to prevent client-side path traversal. matrix-js-sdk     fails to perform this validation. (CVE-2024-50336)

  - The WebChannel API, which is used to transport various information across processes, did not check the     sending principal but rather accepted the principal being sent. This could have led to privilege     escalation attacks. (CVE-2025-0237)

  - Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to     a potentially exploitable crash. (CVE-2025-0238)

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 a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:0167 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    Security Fix(es):

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and     Thunderbird 128.6 (CVE-2025-0243)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19,     Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6 (CVE-2025-0242)

    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 a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:0133 advisory.

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

    Security Fix(es):

    * firefox: Use-after-free when breaking lines in text (CVE-2025-0238)

    * firefox: Memory corruption when using JavaScript Text Segmentation (CVE-2025-0241)

    * firefox: Alt-Svc ALPN validation failure when redirected (CVE-2025-0239)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and     Thunderbird 128.6 (CVE-2025-0243)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19,     Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6 (CVE-2025-0242)

    * firefox: WebChannel APIs susceptible to confused deputy attack (CVE-2025-0237)

    * firefox: Compartment mismatch when parsing JavaScript JSON module (CVE-2025-0240)

    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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-0080 advisory.

    [128.6.0-1.0.1]
    - Fix firefox-oracle-default-prefs.js for new nss [Orabug: 37079773]
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [128.6.0]
    - Add debranding patches (Mustafa Gezen)
    - Add OpenELA default preferences (Louis Abel)

    [128.6.0-1]
    - Update to 128.6.0 build1

Tenable has extracted the preceding description block directly from the Oracle 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 Firefox installed on the remote macOS or Mac OS X host is prior to 134.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-01 advisory.

  - Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5,     Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2025-0242)

  - When redirecting to an invalid protocol scheme, an attacker could spoof the address bar.  Note: This issue     only affected Android operating systems. Other operating systems are unaffected. (CVE-2025-0244)

  - Under certain circumstances, a user opt-in setting that Focus should require authentication before use     could have been be bypassed. (CVE-2025-0245)

  - When using an invalid protocol scheme, an attacker could spoof the address bar.  Note: This issue only     affected Android operating systems. Other operating systems are unaffected. Note: This issue is a     different issue from CVE-2025-0244. (CVE-2025-0246)

  - The WebChannel API, which is used to transport various information across processes, did not check the     sending principal but rather accepted the principal being sent. This could have led to privilege     escalation attacks. (CVE-2025-0237)

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 Firefox installed on the remote Windows host is prior to 134.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-01 advisory.

  - Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5,     Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code.
    (CVE-2025-0242)

  - When redirecting to an invalid protocol scheme, an attacker could spoof the address bar.  Note: This issue     only affected Android operating systems. Other operating systems are unaffected. (CVE-2025-0244)

  - Under certain circumstances, a user opt-in setting that Focus should require authentication before use     could have been be bypassed. (CVE-2025-0245)

  - When using an invalid protocol scheme, an attacker could spoof the address bar.  Note: This issue only     affected Android operating systems. Other operating systems are unaffected. Note: This issue is a     different issue from CVE-2025-0244. (CVE-2025-0246)

  - The WebChannel API, which is used to transport various information across processes, did not check the     sending principal but rather accepted the principal being sent. This could have led to privilege     escalation attacks. (CVE-2025-0237)

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-2025-6fcde64d77 advisory.

    - Updated to latest upstream (134.0)

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 Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-e8a71b6caf advisory.

    - Updated to latest upstream (134.0)

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 version of thunderbird installed on the remote host is prior to 128.7.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2025-2789 advisory.

    A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object`     elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird     < 128.4, and Thunderbird < 132. (CVE-2024-10458)

    An attacker could have caused a use-after-free when accessibility was enabled, leading to a potentially     exploitable crash. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17,     Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10459)

    The origin of an external protocol handler prompt could have been obscured using a data: URL within an     `iframe`. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and     Thunderbird < 132. (CVE-2024-10460)

    In multipart/x-mixed-replace responses, `Content-Disposition: attachment` in the response header was not     respected and did not force a download, which could allow XSS attacks. This vulnerability affects Firefox     < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10461)

    Truncation of a long URL could have allowed origin spoofing in a permission prompt. This vulnerability     affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10462)

    Video frames could have been leaked between origins in some situations. This vulnerability affects Firefox     < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.
    (CVE-2024-10463)

    Repeated writes to history interface attributes could have been used to cause a Denial of Service     condition in the browser. This was addressed by introducing rate-limiting to this API. This vulnerability     affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10464)

    A clipboard paste button could persist across tabs which allowed a spoofing attack. This vulnerability     affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10465)

    By sending a specially crafted push message, a remote server could have hung the parent process, causing     the browser to become unresponsive. This vulnerability affects Firefox < 132, Firefox ESR < 128.4,     Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10466)

    Memory safety bugs present in Firefox 131, Firefox ESR 128.3, and Thunderbird 128.3. Some of these bugs     showed evidence of memory corruption and we presume that with enough effort some of these could have been     exploited to run arbitrary code. This vulnerability affects Firefox < 132, Firefox ESR < 128.4,     Thunderbird < 128.4, and Thunderbird < 132. (CVE-2024-10467)

    Using remote content in OpenPGP encrypted messages can lead to the disclosure of plaintext. This     vulnerability affects Thunderbird < 128.4.3 and Thunderbird < 132.0.1. (CVE-2024-11159)

    matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. matrix-js-sdk before     34.11.0 is vulnerable to client-side path traversal via crafted MXC URIs. A malicious room member can     trigger clients based on the matrix-js-sdk to issue arbitrary authenticated GET requests to the client's     homeserver. Fixed in matrix-js-sdk 34.11.1. (CVE-2024-50336)

    An attacker could write data to the user's clipboard, bypassing the user prompt, during a certain sequence     of navigational events. This vulnerability affects Firefox < 129. (CVE-2024-8900)

    It is currently unknown if this issue is exploitable but a condition may arise where the structured clone     of certain objects could lead to memory corruption. This vulnerability affects Firefox < 131, Firefox ESR     < 128.3, Thunderbird < 128.3, and Thunderbird < 131. (CVE-2024-9396)

    A missing delay in directory upload UI could have made it possible for an attacker to trick a user into     granting permission via clickjacking. This vulnerability affects Firefox < 131, Firefox ESR < 128.3,     Thunderbird < 128.3, and Thunderbird < 131. (CVE-2024-9397)

    A website configured to initiate a specially crafted WebTransport session could crash the Firefox process     leading to a denial of service condition. This vulnerability affects Firefox < 131, Firefox ESR < 128.3,     Thunderbird < 128.3, and Thunderbird < 131. (CVE-2024-9399)

    A potential memory corruption vulnerability could be triggered if an attacker had the ability to trigger     an OOM at a specific moment during JIT compilation. This vulnerability affects Firefox < 131, Firefox ESR     < 128.3, Thunderbird < 128.3, and Thunderbird < 131. (CVE-2024-9400)

    Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5,     Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code. This     vulnerability affects Firefox < 134, Firefox ESR < 128.6, Firefox ESR < 115.19, Thunderbird < 134, and     Thunderbird ESR < 128.6. (CVE-2025-0242)

    Thunderbird displayed an incorrect sender address if the From field of an email used the invalid group     name syntax that is described in CVE-2024-49040. This vulnerability affects Thunderbird < 128.7 and     Thunderbird < 135. (CVE-2025-0510)

    An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable     crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird <     128.7, and Thunderbird < 135. (CVE-2025-1009)

    An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially     exploitable crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7,     Thunderbird < 128.7, and Thunderbird < 135. (CVE-2025-1010)

    A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker     to leverage this to achieve code execution. This vulnerability affects Firefox < 135, Firefox ESR < 128.7,     Thunderbird < 128.7, and Thunderbird < 135. (CVE-2025-1011)

    A race during concurrent delazification could have led to a use-after-free. This vulnerability affects     Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.
    (CVE-2025-1012)

    A race condition could have led to private browsing tabs being opened in normal browsing windows. This     could have resulted in a potential privacy leak. This vulnerability affects Firefox < 135, Firefox ESR <     128.7, Thunderbird < 128.7, and Thunderbird < 135. (CVE-2025-1013)

    Certificate length was not properly checked when added to a certificate store. In practice only trusted     data was processed. This vulnerability affects Firefox < 135, Firefox ESR < 128.7, Thunderbird < 128.7,     and Thunderbird < 135. (CVE-2025-1014)

    The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attacker to     create and export an address book containing a malicious payload in a field. For example, in the Other     field of the Instant Messaging section. If another user imported the address book, clicking on the link     could result in opening a web page inside Thunderbird, and that page could execute (unprivileged)     JavaScript. This vulnerability affects Thunderbird < 128.7. (CVE-2025-1015)

    Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6,     Thunderbird 115.19, and Thunderbird 128.6. Some of these bugs showed evidence of memory corruption and we     presume that with enough effort some of these could have been exploited to run arbitrary code. This     vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and     Thunderbird < 135. (CVE-2025-1016)

    Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. Some     of these bugs showed evidence of memory corruption and we presume that with enough effort some of these     could have been exploited to run arbitrary code. This vulnerability affects Firefox < 135, Firefox ESR <     128.7, Thunderbird < 128.7, and Thunderbird < 135. (CVE-2025-1017)

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.

ID	Name	Product	Family	Published	Updated	Severity
213631	Mozilla Thunderbird ESR < 128.6	Nessus	Windows	1/9/2025	1/31/2025	high
213633	Mozilla Thunderbird < 134.0	Nessus	Windows	1/9/2025	1/16/2025	medium
213636	RHEL 9 : thunderbird (RHSA-2025:0167)	Nessus	Red Hat Local Security Checks	1/9/2025	1/9/2025	medium
213637	RHEL 8 : firefox (RHSA-2025:0133)	Nessus	Red Hat Local Security Checks	1/9/2025	2/6/2025	high
213718	Oracle Linux 9 : firefox (ELSA-2025-0080)	Nessus	Oracle Linux Local Security Checks	1/10/2025	2/6/2025	high
213527	Mozilla Firefox < 134.0	Nessus	MacOS X Local Security Checks	1/7/2025	2/6/2025	critical
213528	Mozilla Firefox < 134.0	Nessus	Windows	1/7/2025	2/6/2025	critical
213553	Fedora 41 : firefox (2025-6fcde64d77)	Nessus	Fedora Local Security Checks	1/8/2025	2/6/2025	critical
213613	Fedora 40 : firefox (2025-e8a71b6caf)	Nessus	Fedora Local Security Checks	1/9/2025	2/6/2025	critical
232367	Amazon Linux 2 : thunderbird (ALAS-2025-2789)	Nessus	Amazon Linux Local Security Checks	3/10/2025	3/10/2025	medium

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