---
id: CVE-2026-58295
title: Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
summary: >-
  Access of resource using incompatible type ('type confusion') in Microsoft
  Edge (Chromium-based) allows an unauthorized attacker to bypass a security
  feature over a network.
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-843
vendor: Microsoft
product: Microsoft Edge (Chromium-based)
affected:
  - edge_chromium-based >= 1.0.0.0 < 150.0.4078.48
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-07-06T16:25:52.899779Z'
published: '2026-07-03'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T18:25:03.861Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-58295'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58295'
    label: Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
tags:
  - cve.org
epss: 0.00507
epssPercentile: 0.40642
ingestedAt: '2026-09-08T17:06:31.899Z'
---

## Overview

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.

## Affected

- `edge_chromium-based >= 1.0.0.0 < 150.0.4078.48`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.