Actively exploited in the wild
Google Chromium V8 Heap Buffer Overflow Vulnerability
Google - Chromium V8 · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2021-21148
HighCVSS 8.8KEVSummary
Google Chrome prior to 88.0.4324.150 contains a heap buffer overflow in V8. A remote attacker could potentially exploit heap corruption via a crafted HTML page.
Risk Assessment
Visiting a malicious website could allow an attacker to execute arbitrary code in the victim's browser, potentially leading to data theft or further attacks.
Recommendation
Update Google Chrome to version 88.0.4324.150 or later. Avoid visiting suspicious websites.
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Original NVD description (English source)
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.