The version of Thunderbird installed on the remote Windows host is prior to 128.10. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-32 advisory.

  - Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory     corruption and we presume that with enough effort this could have been exploited to run arbitrary code.
    (CVE-2025-4093)

  - A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which     could allow content to execute in the top-level documents process instead of the intended frame,     potentially enabling a sandbox escape. (CVE-2025-4083)

  - Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level     updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an     attacker could bypass intended access controls, allowing SYSTEM-level file operations on paths controlled     by a non-privileged user and enabling privilege escalation. (CVE-2025-2817)

  - Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained     with other vulnerabilities, could be used to escalate privileges. This bug only affects Thunderbird for     macOS. Other versions of Thunderbird are unaffected. (CVE-2025-4082)

  - Due to insufficient escaping of the special characters in the copy as cURL feature, an attacker could     trick a user into using this command, potentially leading to local code execution on the user's system.
    This bug only affects Firefox for Windows. Other versions of Firefox are unaffected. (CVE-2025-4084)

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

Detections

Analytics

Mozilla Thunderbird < 128.10

critical Nessus Plugin ID 235064

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Nov 19, 2025, 7:37 AM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") CVSSv3 score source (set to "CVE-2025-4083") Detection (updated detection logic) Plugin metadata Plugin Feed: 202511190737
Version 1.2 May 16, 2025, 6:20 PM IAVM reference Plugin Feed: 202505161820
Version 1.1 May 2, 2025, 7:53 AM New Plugin Feed: 202505020753