Zero Radar
← feed
HighVulnerabilityupdated 30 Oct 2026, 10:55 UTC

Microsoft Edge: several flaws allow attackers to run code

Attackers may be able to get malicious code to run in the Edge browser just by getting you to visit something they control. Once that happens they could take more control of your computer or access data.

Official source
SeverityHighVulnerability
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official sourceBacked by an official source

How the attack works simplified

  1. 1AttackerCreates a malicious web page
  2. 2LureUser is tricked into visiting the page
  3. 3Edge flawVulnerability lets code execute in browser
  4. 4Code runsAttacker runs arbitrary code
  5. ResultAttacker gains code execution on the device

What happened

Multiple vulnerabilities in Microsoft Edge allow a remote, unauthenticated attacker to execute arbitrary code, and may also enable privilege escalation, security feature bypass, spoofing, and data manipulation or disclosure.

Why it is dangerous: A successful attack could let someone run programs on the victim's machine and read or change data, with no login needed. Anyone using an unpatched Edge browser is at risk.

Are you affected?

You are affected if you use Microsoft Edge without the latest security updates installed.

Microsoft Edge (exact versions not stated in the material)

What to do

  1. Update Microsoft Edge to the latest version now
  2. Restart the browser after updating to apply the fix
  3. Avoid opening links from untrusted sources until updated

Timeline

  1. 30 Oct 2026, 10:49 UTC
    Publicly disclosed
  2. 30 Oct 2026, 10:49 UTC
    Reported by CERT-Bund (BSI) · CERT-Bund (BSI)
  3. 30 Oct 2026, 10:49 UTC
    Reported by CERT-Bund (BSI) · CERT-Bund (BSI)
  4. 30 Oct 2026, 10:50 UTC
    Picked up by Zero Radar

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
ZR-b63933cb
Disclosed
30 Oct 2026, 10:49 UTC
On Zero Radar
30 Oct 2026, 10:50 UTC (1 min after disclosure)
Last change
30 Oct 2026, 10:55 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: several flaws allow attackers to run code · Zero Radar