Actively exploited in the wild
Google Chromium WebP Heap-Based Buffer Overflow Vulnerability
Google - Chromium WebP · Listed in the CISA KEV since 2023-09-13. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2023-4863
HighCVSS 8.8KEVSummary
Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)
Risk Assessment
A remote attacker could cause memory corruption and potentially execute arbitrary code in the browser context. Critical severity.
Recommendation
Immediately update Google Chrome to version 116.0.5845.187 or later and libwebp to version 1.3.2 or later. Avoid visiting untrusted websites.
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Original NVD description (English source)
Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)