SecPod

Learn Search

Search across all Learn content

← Back to Security Research
Google Chrome Zero-Day Under Active Exploitation

Google Chrome Zero-Day Under Active Exploitation

Google has released a security advisory for its Chrome users on Windows, Mac, and Linux, addressing 47 security vulnerabilities. This release includes one very critical Zero-Day exploit exploited in the wild. This vulnerability tracked as CVE-2021-21166. However, Endpoints that have not been patched...

Mar 3, 2021By Rinu K2 min read

Google has released a security advisory for its Chrome users on Windows, Mac, and Linux, addressing 47 security vulnerabilities. This release includes one very critical Zero-Day exploit exploited in the wild. This vulnerability tracked as CVE-2021-21166. However, Endpoints that have not been patched are advised to deploy patches ASAP using a patch management solution. Moreover, the other high-severity issues addressed include three heap-buffer overflow flaws in the TabStrip (CVE-2021-21159, CVE-2021-21161) and WebAudio (CVE-2021-21160) components, a use-after-free error (CVE-2021-21162) found in WebRTC, a data validation issue in Reader Mode (CVE-2021-21163) and Chrome for iOS (CVE-2021-21164).

Zero-Day CVE-2021-21166

The wildly-exploited vulnerability exists in the audio component of the browser. It arises from an object lifecycle issue in audio. Object lifecycle is the life span of a programming language object. Also, This issue discovered and reported by Alison Huffman from the Microsoft Browser Vulnerability Research team. However, This is the second zero-day addresses in Chrome this year.

Google added in the advisory,

“Google is aware of reports that an exploit for CVE-2021-21166 exists in the wild.”

Affected products

Google Chrome versions before 89.0.4389.72.

Impact of Google Chrome Security updates

The vulnerabilities allow attackers to cause a program to crash, execute code, obtain potentially sensitive information, and bypass security restrictions on the affected system.

Solution

Google has released the security updates addressing the issue in Google Chrome version 89.0.4389.72.

SanerNow detects this vulnerability and automatically fixes it by applying security updates. Download SanerNow and keep your systems updated and secure.

Featured Posts

Open CVE-2023-49105: The ownCloud Authentication Flaw That Exposed Sensitive Credentials
CVE-2023-49105: The ownCloud Authentication Flaw That Exposed Sensitive Credentials

CVE Research

CVE-2023-49105: The ownCloud Authentication Flaw That Exposed Sensitive Credentials

Sep 25, 2026

Open Patch Analysis & Exploitation Timeline: RouterOS SSH Attacks Predate Production Fixes in CISA's September 10, 2026 KEV Additions
Patch Analysis & Exploitation Timeline: RouterOS SSH Attacks Predate Production Fixes in CISA's September 10, 2026 KEV Additions

CVE Research

Patch Analysis & Exploitation Timeline: RouterOS SSH Attacks Predate Production Fixes in CISA's September 10, 2026 KEV Additions

Two MikroTik RouterOS CVEs entered CISA KEV seven days after production fixes. Dated reporting places SSH-chain exploitation involving CVE-2026-86060 at least one calendar day before those releases; no comparable start date is established for CVE-2026-67277.

Sep 25, 2026

Open Patch Analysis & Exploitation Timeline: A Day-Old Chrome Bug and an Eight-Month-Old Fortinet Flaw Share the Same KEV Batch
Patch Analysis & Exploitation Timeline: A Day-Old Chrome Bug and an Eight-Month-Old Fortinet Flaw Share the Same KEV Batch

CVE Research

Patch Analysis & Exploitation Timeline: A Day-Old Chrome Bug and an Eight-Month-Old Fortinet Flaw Share the Same KEV Batch

Four vulnerabilities added to CISA’s KEV catalog on September 9, 2026 show widely different timelines between public disclosure and formal exploitation-based prioritization, ranging from one day to 239 days.

Sep 24, 2026

Open TA412/APT31: Mapping Threat Actor Patterns to CVE Exploitation Chains

TA412/APT31: Mapping Threat Actor Patterns to CVE Exploitation Chains

CVE Research

TA412/APT31: Mapping Threat Actor Patterns to CVE Exploitation Chains

A chronological look at how a long-running China-nexus espionage cluster evolved from server-side exploitation to a chained Chrome/Windows zero-day kit — and what that shift signals.

Sep 24, 2026