PT-2025-26731 · Mozilla+5 · Firefox+5

Hafiizh + 1 · Published 2025-06-24 · Updated 2026-02-02 · CVE-2025-6434

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions: Firefox versions prior to 140

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.

Recommendations: For versions prior to 140, update to version 140 or later to resolve the issue. As a temporary workaround, consider being cautious when granting exceptions for websites, especially when accessing them via HTTP, to minimize the risk of exploitation.

Fix

Clickjacking

UI Misrepresentation of Critical Information

Weakness Enumeration

CWE-1021

CWE-451

Related Identifiers

ALT-PU-2025-11100

ALT-PU-2025-11495

ALT-PU-2025-11497

ALT-PU-2025-14599

ALT-PU-2025-8725

ALT-PU-2025-9988

BDU:2025-07647

CVE-2025-6434

OPENSUSE-SU-2025:15325-1

OPENSUSE-SU-2025:15371-1

OPENSUSE-SU-2025:15383-1

SUSE-SU-2025:02339-1

SUSE-SU-2025:02529-1

SUSE-SU-2025:02546-1

SUSE-SU-2025_02339-1

SUSE-SU-2025_02529-1

USN-7991-1

Affected Products

Alt Linux

Astra Linux

Firefox

Linuxmint

Suse

Ubuntu

References · 174

• https://ubuntu.com/security/CVE-2025-13015 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-0887 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-11711 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2025-51 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-0891 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2025-54 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2025-51 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-14328 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02339-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15383-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-8039 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02529-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-11715 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-6434 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-8038 · Vendor Advisory