Chrome Zero-Day CVE-2025-6554 Under Active Attack — Google Issues Security Update
Summary:
Google has released security updates to address a high-severity type confusion flaw (CVE-2025-6554) found in the V8 JavaScript and WebAssembly engine used by Google Chrome. Type confusion occurs when a program allocates or accesses memory assuming it to be of one type, while it is actually of another, leading to unpredictable behavior. In this case, the flaw allows remote attackers to exploit Chrome by tricking users into opening a specially crafted HTML page, enabling arbitrary read and write operations within the browser's memory space. This opens the door to serious security risks, including unauthorized access to sensitive data, execution of malicious code, or full system compromise.
Security Officer Comments:
An exploit for CVE-2025-6554 has been detected in the wild, indicating active abuse before a patch was issued, classifying it as a zero-day. Google’s Threat Analysis Group discovered the flaw on June 25, 2025, and believes it may have been used in highly targeted attacks, potentially by nation-state actors. Although mitigated quickly through a configuration update, the existence of an active exploit means users, especially those handling sensitive information, should urgently update their browsers. While Google hasn't shared specifics about the attackers, the confirmation of real-world exploitation underscores the need for immediate action across all Chromium-based browsers.
Suggested Corrections:
To safeguard against potential threats, it's advised that users update their Chrome browser to versions 138.0.7204.96/.97 for Windows, 138.0.7204.92/.93 for macOS, and 138.0.7204.96 for Linux.
Link(s):
https://thehackernews.com/2025/07/google-patches-critical-zero-day-flaw.html
Google has released security updates to address a high-severity type confusion flaw (CVE-2025-6554) found in the V8 JavaScript and WebAssembly engine used by Google Chrome. Type confusion occurs when a program allocates or accesses memory assuming it to be of one type, while it is actually of another, leading to unpredictable behavior. In this case, the flaw allows remote attackers to exploit Chrome by tricking users into opening a specially crafted HTML page, enabling arbitrary read and write operations within the browser's memory space. This opens the door to serious security risks, including unauthorized access to sensitive data, execution of malicious code, or full system compromise.
Security Officer Comments:
An exploit for CVE-2025-6554 has been detected in the wild, indicating active abuse before a patch was issued, classifying it as a zero-day. Google’s Threat Analysis Group discovered the flaw on June 25, 2025, and believes it may have been used in highly targeted attacks, potentially by nation-state actors. Although mitigated quickly through a configuration update, the existence of an active exploit means users, especially those handling sensitive information, should urgently update their browsers. While Google hasn't shared specifics about the attackers, the confirmation of real-world exploitation underscores the need for immediate action across all Chromium-based browsers.
Suggested Corrections:
To safeguard against potential threats, it's advised that users update their Chrome browser to versions 138.0.7204.96/.97 for Windows, 138.0.7204.92/.93 for macOS, and 138.0.7204.96 for Linux.
Link(s):
https://thehackernews.com/2025/07/google-patches-critical-zero-day-flaw.html