---
id: CVE-2026-85893
title: >-
  Use after free in Microsoft Edge (Chromium-based) allows an unauthorized
  attacker to elevate privileges over a network.
summary: >-
  Use after free in Microsoft Edge (Chromium-based) allows an unauthorized
  attacker to elevate privileges over a network.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: microsoft
product: edge_chromium
affected:
  - edge_chromium < 153.0.4234.32
patched:
  - edge_chromium 153.0.4234.32
published: '2026-09-15'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:37:48.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85893'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85893'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00837
epssPercentile: 0.55989
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T03:57:02.999225Z'
ingestedAt: '2026-09-15T23:46:25.569Z'
---

## Overview

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

## Affected

- `edge_chromium < 153.0.4234.32`

## Remediation

Upgrade past the affected range:

- `edge_chromium 153.0.4234.32`