Thursday, May 22, 2025
HomeChromeEmergency Chrome Update Released to Patch Actively Exploited Zero-Day Bug

Emergency Chrome Update Released to Patch Actively Exploited Zero-Day Bug

Published on

SIEM as a Service

Follow Us on Google News

Google has announced an emergency update for Chrome (94.0.4606.61), and in this update, it has addressed Chrome’s 11th ‘zero days’ exploit of the year. 

In this emergency update, Google has tracked the zero-day vulnerability as CVE-2021-37973 with High severity and this zero-day vulnerability attacks the users of the following platforms:-

  • Linux
  • macOS
  • Windows

This vulnerability was being used after free in Portals API, and there is a web page navigation system in this vulnerability, that allows a page to display another page as an inset.

- Advertisement - Google News

Not only this but it also performs a seamless transition to a new state, and in that its formerly-inset pages convert into the top-level document. After knowing about the vulnerability, the Chrome-introduced some update that has been spreading all over the world to Stable desktop channel.

Eleventh zero-day

Google has announced this emergency update after detecting the vulnerability “CVE-2021-37973,” and they have also patched this 11th zero-day vulnerability in the Chrome web browser.

Here’s the list of all zero-day vulnerabilities detected this year:-

  • CVE-2021-21148 – February 4th, 2021
  • CVE-2021-21166 – March 2nd, 2021
  • CVE-2021-21193 – March 12th, 2021
  • CVE-2021-21220 – April 13th, 2021
  • CVE-2021-21224 – April 20th, 2021
  • CVE-2021-30551 – June 9th, 2021 
  • CVE-2021-30554 – June 17th, 2021
  • CVE-2021-30563 – July 15th, 2021
  • CVE-2021-30632 – September 13th, 2021
  • CVE-2021-30633 – September 13th, 2021

No key Details were Unveiled regarding Ongoing Attacks

Moreover, Clément Lecigne from Google TAG, with the help of Sergei Glazunov and Mark Brand from Google Project Zero has stated that the zero-day security flaw that has been fixed now was initially published the day when the first Google Chrome 94 stable was released. 

After investigating the whole attack, they claimed that the exploitation of this vulnerability allows the threat actors to implement arbitrary code on computers running unpatched Chrome versions.

However, Google has gone through the details carefully, and they conclude that the vulnerability has been discovered in the wild attacks exploiting CVE-2021-37973.

But they have not yet unveiled any key details of this attack or any steps that were used by the threat actors. 

While the threat actors are attacking Chrome, since it is used by nearly 2.65 billion users all over the world, and many users are connected through it, which makes it is a huge lucrative target for the threat actors to initiate attacks.

Found this article interesting!! Follow us on LinkedinTwitter,  Facebook for daily Cyber Security News & Updates

Balaji
Balaji
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Latest articles

CefSharp Enumeration Tool Identifies Critical Security Issues in .NET Desktop Applications

Cybersecurity researchers and red teamers, a newly released tool named CefEnum is shedding light...

Russian Hackers Exploit Oracle Cloud Infrastructure to Target Scaleway Object Storage

Russian threat actors have been leveraging trusted cloud infrastructure platforms like Oracle Cloud Infrastructure...

Critical Vulnerability in Netwrix Password Manager Enables Authenticated Remote Code Execution

A critical security vulnerability has been discovered in Netwrix Password Secure, a widely used...

Cityworks Zero-Day Vulnerability Used by UAT-638 Hackers to Infect IIS Servers with Shell Malware

Cisco Talos has uncovered active exploitation of a zero-day remote-code-execution vulnerability, identified as CVE-2025-0994,...

Resilience at Scale

Why Application Security is Non-Negotiable

The resilience of your digital infrastructure directly impacts your ability to scale. And yet, application security remains a critical weak link for most organizations.

Application Security is no longer just a defensive play—it’s the cornerstone of cyber resilience and sustainable growth. In this webinar, Karthik Krishnamoorthy (CTO of Indusface) and Phani Deepak Akella (VP of Marketing – Indusface), will share how AI-powered application security can help organizations build resilience by

Discussion points


Protecting at internet scale using AI and behavioral-based DDoS & bot mitigation.
Autonomously discovering external assets and remediating vulnerabilities within 72 hours, enabling secure, confident scaling.
Ensuring 100% application availability through platforms architected for failure resilience.
Eliminating silos with real-time correlation between attack surface and active threats for rapid, accurate mitigation

More like this

Over 100 Malicious Chrome Extensions Exploiting Users to Steal Login Credentials and Execute Remote Code

Cybersecurity researchers have uncovered a sprawling network of over 100 malicious Chrome extensions actively...

Xerox Launches April 2025 Security Patch for FreeFlow Print Server v2

Xerox has launched its April 2025 Security Patch Update for the FreeFlow Print Server...

Google Chrome Zero-Day Vulnerability (CVE-2025-4664) Actively Exploited in The Wild

Google has rolled out a fresh Stable Channel update for the Chrome browser across...