CVE-2026-42891 | Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability

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

Published: 2026-05-12 Last update: 2026-05-14 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-42891 is rated Low Risk (31.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-42891

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-15 0.05% 0.05% +0.00%
2 2026-05-13 — 0.05% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-42891

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 4.2 [email protected]

Weakness enumeration for CVE-2026-42891

GitHub Security Advisory for CVE-2026-42891

GHSA-hg2q-w8gq-jmf7 · Severity: medium — User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based)...

Affected software / configurations for CVE-2026-42891

Vendor Product Version Raw CPE
microsoft edge_chromium < 148.0.3967.55 cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:android:*:*

References for CVE-2026-42891

cvelogic Threat Intelligence