CVE-2026-42838

MEDIUM

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Title source: cna
STIX 2.1

Description

Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42838

Scores

CVSS v3 5.4
EPSS 0.0005
EPSS Percentile 14.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-74
Status published
Products (2)
microsoft/edge_chromium < 148.0.3967.55
Microsoft/Microsoft Edge (Chromium-based) 1.0.0.0 - 148.0.3967.55
Published May 12, 2026
Tracked Since May 12, 2026