Ethical Hacking News
Google has patched a critical zero-day flaw in its Chrome browser's V8 engine following reports of active exploitation. The vulnerability, tracked as CVE-2025-6554, has been described as a type confusing flaw that can allow remote attackers to perform arbitrary read/write operations via a crafted HTML page. To safeguard against potential threats, users are advised to update their Chrome browser immediately.
A critical zero-day flaw was discovered in Google Chrome's V8 engine. The vulnerability, CVE-2025-6554, has been described as a type confusing flaw in the JavaScript and WebAssembly engine. Google acknowledged the issue and released security updates to address it. Users are advised to update their Chrome browser to patch the vulnerability. Other Chromium-based browsers should also apply the fixes as soon as they become available. Zero-day vulnerabilities pose a significant threat to software stability and user security.
The tech world has been abuzz with the news of a critical zero-day flaw discovered in Google Chrome's V8 engine, which has left security experts and users on high alert. According to recent reports, the vulnerability, tracked as CVE-2025-6554 (CVSS score: N/A), has been described as a type confusing flaw in the JavaScript and WebAssembly engine.
The vulnerability was first discovered by Clément Lecigne of Google's Threat Analysis Group (TAG) on June 25, 2025. This discovery signifies that the issue may have already been weaponized in highly targeted attacks - possibly involving nation-state actors or surveillance operations. TAG is typically responsible for detecting and investigating serious threats such as government-backed attacks.
Google promptly acknowledged that an exploit for CVE-2025-6554 exists in the wild, prompting them to release security updates to address the issue. These patches were pushed out to the Stable channel across all platforms, which implies that users are advised to 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.
It is worth noting that this vulnerability marks the fourth zero-day vulnerability in Chrome to be addressed by Google since the start of the year following CVE-2025-2783, CVE-2025-4664, and CVE-2025-5419. Furthermore, there is currently no clarity on whether CVE-2025-4664 has been exploited maliciously.
To safeguard against potential threats, users are advised to update their Chrome browser as soon as possible. In addition, organizations handling sensitive or high-value data should prioritize patching - especially for those roles where vulnerabilities pose a higher risk of exploitation.
Other Chromium-based browsers such as Microsoft Edge, Brave, Opera, and Vivaldi are also recommended to apply the fixes as and when they become available. Users who are unsure whether their browser is up-to-date can check by visiting Settings > Help > About Google Chrome - this should trigger an automatic update.
The implications of a critical zero-day flaw such as CVE-2025-6554 highlight the ever-evolving threat landscape that organizations and individuals must navigate. These exploits often result in unexpected software behavior, leading to arbitrary code execution or program crashes. Moreover, in real-world attacks, these flaws can let hackers install spyware, launch drive-by downloads, or run malicious code - sometimes just by getting someone to open a malicious website.
In recent times, zero-day vulnerabilities have become increasingly prevalent, further complicating the task of protecting against them. As such, it is essential that users stay vigilant and keep their software up-to-date in order to minimize their exposure to these types of threats.
Related Information:
https://www.ethicalhackingnews.com/articles/Google-Patches-Critical-Zero-Day-Flaw-in-Chromes-V8-Engine-After-Active-Exploitation-ehn.shtml
https://thehackernews.com/2025/07/google-patches-critical-zero-day-flaw.html
https://cloudindustryreview.com/google-fixes-critical-zero-day-vulnerability-in-chromes-v8-engine-following-active-exploits/
Published: Tue Jul 1 05:36:51 2025 by llama3.2 3B Q4_K_M