---
id: CVE-2026-85892
title: >-
  Concurrent execution using shared resource with improper synchronization
  ('race condition') in Microsoft Edge (Chromium-based) allows an authorized
  attacker to elevate privileges locally.
summary: >-
  Concurrent execution using shared resource with improper synchronization
  ('race condition') in Microsoft Edge (Chromium-based) allows an authorized
  attacker to elevate privileges locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-362
vendor: microsoft
product: edge_chromium
affected:
  - edge_chromium < 152.0.4191.66
patched:
  - edge_chromium 152.0.4191.66
published: '2026-09-14'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T20:45:14.593'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85892'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85892'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T19:11:14.371876Z'
epss: 0.00207
epssPercentile: 0.09613
ingestedAt: '2026-09-14T19:13:23.460Z'
---

## Overview

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges locally.

## Affected

- `edge_chromium < 152.0.4191.66`

## Remediation

Upgrade past the affected range:

- `edge_chromium 152.0.4191.66`