Zero Radar
← feed
HighVulnerabilityCVE-2026-113303updated 25 Oct 2026, 13:32 UTC

Google Chrome WebRTC memory flaw lets a malicious web page run code

A specially crafted web page could corrupt memory in Chrome's video and audio call component and potentially run code on your computer. Updating Chrome closes the hole.

Fix availableOfficial, 2 sources
SeverityHighCVSS 8.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?YesChrome 156.0.8078.47 (Linux) and 156.0.8078.47/.48 (Windows/Mac) or later. · since 25 Oct 2026
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1Attacker builds pageCrafted HTML triggers the WebRTC flaw
  2. 2Victim visits pageChrome processes the malicious content
  3. 3Memory corruptedWebRTC component is abused
  4. 4Code runs in sandboxPotential execution inside browser sandbox
  5. ResultAttacker runs code inside the browser sandbox

What happened

A memory corruption bug in the WebRTC component of Google Chrome, triggered by a crafted HTML page, allows possible arbitrary code execution inside the browser sandbox.

Why it is dangerous: Anyone who visits a malicious or compromised web page in an unpatched Chrome browser could be at risk, so the impact is broad for ordinary users and organizations.

Are you affected?

You are affected if you use Google Chrome prior to 156.0.8078.47 on Linux, or prior to 156.0.8078.47/.48 on Windows and Mac.

Google Chrome on Windows, Mac and Linux, versions prior to 156.0.8078.47 (Linux) and 156.0.8078.47/.48 (Windows/Mac).

What to do

  1. Update Google Chrome to 156.0.8078.47 (Linux) or 156.0.8078.47/.48 (Windows/Mac) or later
  2. Restart Chrome after the update so the fix takes effect
  3. Check for other Chromium-based browsers that may need their own updates

Timeline

  1. 20 Oct 2026, 20:09 UTC
    Publicly disclosed
  2. 20 Oct 2026, 20:09 UTC
    Reported by Chrome Releases · Chrome Releases
  3. 20 Oct 2026, 22:19 UTC
    Reported by NVD · NVD

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-113303
CVSS
8.8 / 10
EPSS
0.6% chance of exploitation within 30 days
Disclosed
20 Oct 2026, 20:09 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 13:32 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

Google Chrome WebRTC memory flaw lets a malicious web page run code · Zero Radar