PT-2026-40260 · Microsoft · Edge

Published 2026-05-11 · Updated 2026-05-14 · CVE-2026-42891

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Name of the Vulnerable Software and Affected Versions Microsoft Edge (Chromium-based) (affected versions not specified)

Description A user interface (UI) misrepresentation of critical information allows an unauthorized attacker to perform spoofing over a network. Spoofing is a technique where a person or program successfully identifies as another by falsifying data.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

UI Misrepresentation of Critical Information

Weakness Enumeration

CWE-451

Related Identifiers

BDU:2026-06745

CVE-2026-42891

Affected Products

Edge

References · 6

• https://bdu.fstec.ru/vul/2026-06745 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-42891 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42891 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42891 · Vendor Advisory
• https://reddit.com/r/Action1/comments/1tcxu4s/action1_showing_microsoft_edge_vulnerabilities_on · Reddit Post
• https://t.me/CVEtracker/53526 · Telegram Post