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HighVulnerabilityCVE-2026-85898updated 27 Oct 2026, 21:36 UTC

Microsoft Edge: flaw lets attackers run code on your computer over a network

A bug in the Edge browser could let an outside attacker run their own code on your computer without you doing anything special. The browser mixes up the type of data it is handling, which an attacker can abuse.

Official, 3 sources
SeverityHighCVSS 8.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 3 sourcesBacked by an official source

How the attack works simplified

  1. 1AttackerSets up a malicious web page or link
  2. 2Edge browserUser visits the page with Edge
  3. 3Code runsType confusion lets attacker run code
  4. 4Your computerAttacker gains control of the device
  5. ResultAttacker runs code on the computer

What happened

A type confusion flaw (CWE-843) in Microsoft Edge (Chromium-based) allows an unauthorized network attacker to execute arbitrary code.

Why it is dangerous: Successful exploitation could give an attacker control over the affected computer, putting its data and accounts at risk. Anyone who browses with an unpatched Edge is exposed.

Are you affected?

You are affected if you run a vulnerable version of Microsoft Edge (Chromium-based) on your computer.

Microsoft Edge (Chromium-based); exact vulnerable versions not stated in the provided material.

What to do

  1. Update Microsoft Edge to the latest version now using Edge's built-in update check (Settings > About Microsoft Edge)
  2. Restart Edge after the update so the fix takes effect
  3. Check the Microsoft Security Response Center advisory for CVE-2026-62765 for the exact patched version

Timeline

  1. 27 Oct 2026, 14:00 UTC
    Publicly disclosed
  2. 27 Oct 2026, 21:19 UTC
    Reported by NVD · NVD
  3. 27 Oct 2026, 21:22 UTC
    Picked up by Zero Radar
  4. 27 Oct 2026, 21:27 UTC
    Microsoft MSRC reported on it · Microsoft MSRC
  5. 27 Oct 2026, 21:36 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 3 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-85898 · GHSA-jj96-498p-xf48
CVSS
8.8 / 10
EPSS
0.8% chance of exploitation within 30 days
Disclosed
27 Oct 2026, 14:00 UTC
On Zero Radar
27 Oct 2026, 21:22 UTC (7 h after disclosure)
Last change
27 Oct 2026, 21:36 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Microsoft Edge: flaw lets attackers run code on your computer over a network · Zero Radar