CVE-2026-42891: 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
Spoofing
Exploit Status
Not Exploited
Exploitation Likelihood
Unlikely
Patch Tuesday
2026-May
Released
2026-05-11

Description

User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) 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? Successful exploitation of this vulnerability requires an attacker to prepare the target environment to improve exploit reliability. 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. Why is the severity for this CVE rated as Moderate, but the CVSS score is higher than normal? Per our severity guidelines, the amount of user interaction or preconditions required to allow this sort of exploitation downgraded the severity, specifically it says, "If a bug requires more than a click, a key press, or several preconditions, the severity will be downgraded". The CVSS scoring system doesn't allow for this type of nuance. What is the version information for this release? Microsoft Edge Version Date Released Based on Chromium Version 148.0.3967.55 05/11/2026 148.0.7778.97

Affected Products (1)

Browser

  • Microsoft Edge for Android

Acknowledgments

<a href="https://x.com/zxyhellzing">xzyhellsing (Saidina Hikam)</a>

Revision History

  • 2026-05-11: Information published.