CVE-2026-0391: Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability

Overview

Severity
Medium (CVSS 6.5)
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
Category
Edge - Chromium
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Feb
Released
2026-02-05
EPSS Score
0.07% (percentile: 20.7%)

Description

User interface (ui) misrepresentation of critical information in Microsoft Edge for Android allows an unauthorized attacker to perform spoofing over a network.

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? The attacker must correctly craft convincing spoofed UI chrome, time the fullscreen entry, and rely on user perception. While the exploit triggers reliably after a gesture, successful deception depends on careful social engineering and realistic mimicking of browser UI. According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and some loss of integrity (I:L), but no loss of availability (A:N). What does that mean for this vulnerability? An attacker who successfully exploited this vulnerability could view sensitive information, (Confidentiality), and make some changes to disclosed information (Integrity), but they would not be able to affect Availability. What is the version information for this release? Microsoft Edge Version Date Released Based on Chromium Version 143.0.3650.66 12/04/2025 143.0.7499.40/.41

Affected Products (1)

Browser

  • Microsoft Edge (Chromium-based)

Acknowledgments

xyzhellsing

Revision History

  • 2026-02-05: Information published.