---
id: CVE-2026-45489
title: Microsoft Edge (Chromium-based) Spoofing Vulnerability
summary: Microsoft Edge (Chromium-based) Spoofing Vulnerability
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
published: '2026-07-03'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45489'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45489'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00876
epssPercentile: 0.56984
ingestedAt: '2026-07-04T16:56:19.078Z'
vendor: Microsoft
product: Microsoft Edge (Chromium-based)
affected:
  - edge_chromium-based >= 1.0.0.0 < 150.0.4078.48
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-06T16:47:20.441855Z'
cwe:
  - CWE-749
---

## Overview

Microsoft Edge (Chromium-based) Spoofing Vulnerability

## Remediation

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