8.8

CVE-2026-84128

Privilege escalation in the WebDriver BiDi component

Privilege escalation in the WebDriver BiDi component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox Version < 155.0.0
Mozilla ≫ Thunderbird Version < 155.0
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.16
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

https://www.mozilla.org/security/advisories/mfsa2026-82/
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=2044280
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-86/
Vendor Advisory