Critical Update: Google Patches Chrome Zero-Day Exploited in Russian Cyber Attacks

TL;DR

• Google has released an emergency patch for a high-severity vulnerability (CVE-2025-2783) in Chrome.
• The flaw has been actively exploited in cyber attacks targeting Russian organizations.
• This update is crucial for Chrome users to protect against potential security breaches.

Google Addresses High-Severity Zero-Day Vulnerability in Chrome

Google has released an out-of-band update to address a critical security flaw in its Chrome browser for Windows. The vulnerability, designated as CVE-2025-2783, has been exploited in real-world attacks directed at organizations in Russia. This issue is described as an “incorrect handle provided in unspecified circumstances in Mojo on Windows” ¹.

Details of the Vulnerability

The vulnerability, identified as CVE-2025-2783, affects the Mojo system in Chrome. Mojo is a collection of runtime libraries that provide abstractions for inter-process communication (IPC) and multithreading. The flaw arises from an incorrect handle provided in certain conditions, making it a high-severity threat.

Impact and Exploitation

The exploitation of this vulnerability has been observed in the wild, particularly in cyber espionage attacks targeting Russian entities. These attacks highlight the urgent need for users to update their Chrome browsers to mitigate potential risks.

Patch Availability

Google has promptly released a patch to fix this vulnerability. Users are strongly advised to update their Chrome browsers to the latest version to protect against this security threat. The update ensures that the flaw is rectified, preventing further exploitation.

Conclusion

The discovery and subsequent patching of CVE-2025-2783 underscore the ongoing challenge of cybersecurity in the digital age. Prompt updates and vigilance are essential to safeguard against emerging threats. Chrome users should prioritize updating their browsers to ensure their security and protect sensitive information.

Additional Resources

For further insights, check:

• The Hacker News Article

References

1. (March 26, 2025). “Zero-Day Alert: Google Releases Chrome Patch for Exploit Used in Russian Espionage Attacks”. The Hacker News. Retrieved July 28, 2025. ↩︎