The version of Firefox installed on the remote Windows host is prior to 148.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-13 advisory.

  - Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147     and Thunderbird 147. 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-2026-2793)

  - Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox <     148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2757)

  - Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android. This     vulnerability affects Firefox < 148. (CVE-2026-2794)

  - Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR <     115.33, and Firefox ESR < 140.8. (CVE-2026-2758)

  - Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox <     148, Firefox ESR < 115.33, and Firefox ESR < 140.8. (CVE-2026-2759)

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 Firefox < 148.0

critical Nessus Plugin ID 299865

Version 1.4