Chrome Security Updates – August 2025

This page lists details of security updates released for Google Chrome browser in August 2025. The Chrome browser is based on the Chromium project.

Google Chrome security updates are released to resolve security vulnerabilities in the underlying Chromium browser engine. We look at the security update releases for Chrome in August 2025 below.

The information below is suitable for Chrome installations on Windows computers or Windows operating systems.

The latest Chrome version as of 29 August 2025 is 139.0.7258.154/.155. The last update was rolled out on 26 August 2025. The latest update is important as it addresses a CRITICAL security vulnerability in the Chromium browser engine.

Essential points

• Chrome browser stable channel is now on build 139. Until July, Chrome worked on build 138.
• We have had 4 iterations of Chrome security updates in August. There has been an update on 5 August, 12 August, 19 August and now 26 August 2025. The last one fixes a CRITICAL security vulnerability.
• On 26 August 2025, Chrome got a resolution for a CRITICAL security vulnerability and the browser is now on 139.0.7258.154/155. Details of the vulnerability are shared below.
• On 19 August 2025, Chrome received another security update. The latest version of Chrome browser is 139.0.7258.138/.139. It addresses one security vulnerability.
• On 12 August 2025, a new iteration or a new security update for Chrome browser was released. It pushed the stable channel version for Chrome to Version 139.0.7258.127/.128. It resolved 6 security vulnerabilities. 5 of these security vulnerabilities are publicly disclosed and patched in the build version 139.0.7258.127/.128.
• The initial security update was released on 5 August 2025 wherein the stable channel version for Chrome was Version 139.0.7258.66/67. It resolved 12 security vulnerabilities. 8 of these security vulnerabilities are publicly disclosed and patched in the build version 139.0.7258.66/67.

Security Vulnerabilities – Chrome update

The security update for 26 October 2025 resolves a CRITICAL security vulnerability.

• CVE-2025-9478: Use after free in ANGLE.

The security update for 19 August 2025 resolves one security vulnerability reported by the Chromium project:

• CVE-2025-9132 – HIGH severity – Out of bounds write in V8

The security update for 12 August 2025 resolved the following 5 security vulnerabilities reported by the Chromium project:

• CVE-2025-8879 – HIGH Severity – Heap buffer overflow in libaom
• CVE-2025-8880 – HIGH Severity – Race in V8
• CVE-2025-8881 _ Medium Severity – Inappropriate implementation in File Picker
• CVE-2025-8882 – Medium Severity – Use after free in Aura
• CVE-2025-8901 – HIGH Severity – Out of bounds write in ANGLE

The latest security update does report 3 HIGH severity vulnerabilties. Therefore, it is important to update Chrome to the latest build at your earliest convenience.

The security update for 5 August 2025 resolved the following security vulnerabilities reported by the Chromium project:

• CVE-2025-8576 – Medium Severity – Use after free in Extensions
• CVE-2025-8577 – Medium Severity – Inappropriate implementation in Picture In Picture.
• CVE-2025-8578 – Medium Severity – Use after free in Cast
• CVE-2025-8579 – Low Severity – Inappropriate implementation in Gemini Live in Chrome
• CVE-2025-8580 – Low Severity – Inappropriate implementation in Filesystems
• CVE-2025-8581 – Low Severity – Inappropriate implementation in Extensions.
• CVE-2025-8582 – Low Severity – Insufficient validation of untrusted input in DOM
• CVE-2025-8583 – Low Severity – Inappropriate implementation in Permissions.

How to find the current Chrome version on your computer?

The easiest way is to open the Chrome browser and type chrome://version in the address bar. Or, you can open the Chrome browser and get the version of browser from the ‘About’ option.