CVEvulnerability

CVE-2025-6434

4.3 MEDIUM Published 2025-06-24 Modified 2026-09-30 Official page ↗
Status
Modified
Published
2025-06-24
Last modified
2026-09-30
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weaknesses
CWE-1021

Description

The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability was fixed in Firefox 140 and Thunderbird 140.

Affected configurations

• mozilla firefox (< 140.0)

Related

Weakness · CWE (1)

  • CWE-1021 Improper Restriction of Rendered UI Layers or Frames weakness

References