Your Browser is at Risk: Chrome 142 Patches 20 Vulnerabilities Allowing Malicious Code Execution.

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Published by CyberDudeBivash • Date: Oct 30, 2025 (IST)

Your Browser is at Risk: Chrome 142 Patches 20 Vulnerabilities Allowing Malicious Code Execution.

Chrome 142 (Stable) ships 20 security fixes across Windows, macOS, and Linux — with several high-severity issues in V8. Update, relaunch, and apply enterprise guardrails now.

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TL;DR — Update & Relaunch Chrome Now

  • Release: Chrome 142 Stable (142.0.7444.59/.60) shipped Oct 28–30, 2025. 
  • Security: Google lists 20 security fixes, including multiple high-severity V8 issues (Type Confusion, races). 
  • Risk: Some bugs in similar classes historically enable arbitrary code execution when chained/exploited; outlets summarize 142 as mitigating code-execution risk. 
  • Action: Go to chrome://settings/help → update → Relaunch. Enterprises: push 142, force restart windows, and apply guardrails below.

Contents

  1. What’s New in Chrome 142 (Security & Platform)
  2. Security Highlights & CVE Snapshot
  3. How to Update (Users & Enterprise)
  4. Rapid Response: 10-Step Playbook
  5. Enterprise Guardrails for Browsers
  6. Hardening Checklist (Post-Update)
  7. FAQ
  8. Sources

What’s New in Chrome 142 (Security & Platform)

  • Local network access restrictions gated behind permission prompts (reduces risk from web pages poking your LAN devices). 
  • Ongoing security architecture work (site isolation improvements, memory safety efforts). 

Security Highlights & CVE Snapshot

Google’s bulletin for 142 confirms 20 security fixes with multiple High-severity entries in V8, Media, Extensions, etc. Highlights include:

  • CVE-2025-12428: Type Confusion in V8 (High; $50,000 bounty).
  • CVE-2025-12429: Inappropriate implementation in V8 (High; $50,000).
  • CVE-2025-12431: Inappropriate implementation in Extensions (High).
  • Additional Medium/Low issues across Storage, Omnibox, PageInfo, Ozone, WebXR, and UI. 

Media coverage frames the update as reducing pathways to malicious code execution — a common outcome when V8 bugs are exploited. 

How to Update (Users & Enterprise)

  1. Desktop (user): Menu → Help → About Google Chrome → wait for 142 → Relaunch.
  2. Mobile: Update via Play Store/App Store; relaunch.
  3. Enterprise (Google Admin/Intune/Jamf): Pin minimum version to 142+, schedule forced relaunch (off-hours), and verify rollout via console reports.

Rapid Response: 10-Step Playbook (Do this today)

  1. Push Chrome 142 to all endpoints; force relaunch policy for laggards.
  2. Audit extension allowlist; remove untrusted items.
  3. Turn on Enhanced Safe Browsing for high-risk users.
  4. Harden password managers; enforce hardware-key 2FA for Google accounts.
  5. Block legacy plugins and risky flags via policy.
  6. Update OS graphics/media libs (reduce exploit stability).
  7. Monitor for crashes after untrusted site visits (triage possible exploit attempts).
  8. SIEM hunt: unusual child processes from browser, unsolicited downloads, --single-process anomalies.
  9. Threat-intel: watch for fresh exploit kits targeting 142-fixed classes.
  10. Communicate: org-wide update memo + helpdesk script.

Enterprise Guardrails for Browsers

  • Set BrowserMinimumVersion=142; enable AutoUpdateCheckPeriodMinutes and RelaunchNotification.
  • Use OS-level isolation (AppContainer/macOS sandbox) and EDR rules for suspicious browser child processes.
  • Restrict LAN device access from browser where unnecessary; consider Chrome 142’s new permission gating. 
  • Segment ad-hoc browsing (VDI) for high-privilege admins.

Post-Update Hardening Checklist

  • Enable site isolation; disable remote debugging on production endpoints.
  • Lock dangerous protocols/handlers; review file-type auto-open.
  • Set strict download policies; scan all downloads.
  • Educate users to relaunch after update prompts (patch is inactive until restart).

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FAQ

Is there a zero-day in 142?

Google’s 142 bulletin lists 20 fixes and highlights externally reported issues. As of publication, it does not flag an in-the-wild zero-day in the Stable post. Always apply updates promptly. 

Do I need to relaunch?

Yes. Chrome only activates the new binaries after a relaunch.

What’s the risk if I delay?

Exploit kits regularly target browser engines (like V8). Delaying patches increases exposure to drive-by attacks.

What changed for local network access?

Chrome 142 restricts requests to devices on your local network unless permitted, reducing certain web-to-LAN abuse paths. 

Sources

  • Google Chrome Releases — Stable Channel Update (Chrome 142; 20 security fixes; versions/build numbers). 
  • Chrome for Developers — Chrome 142 release notes (local network access restrictions; platform notes). 
  • Coverage: “Chrome 142 Released With Fix for 20 Vulnerabilities that Allows Malicious Code Execution.” 
  • Nessus plugin note referencing versions < 142.0.7444.59 affected by multiple vulnerabilities. 

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