vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-42838

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

MEDIUM
5.4
CVSS Score
Published: May 12, 2026 at 04:59 PM UTC
Updated: October 26, 2026 at 06:10 PM UTC
1 product affected across 1 vendorEdge Chromium

Using Microsoft Edge (Chromium-based) by Microsoft?

Get instant alerts when new vulnerabilities affect Microsoft Edge (Chromium-based) - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Edge Chromium· Microsoft
95%
v < 148.0.3967.551.0.0.0
Affected range stops below 148.0.3967.55, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42838

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-74

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card