CVE-2026-9939
Analyzed Analyzed - Analysis Complete
Heap Buffer Overflow in Google Chrome WebCodecs

Publication date: 2026-05-28

Last updated on: 2026-05-29

Assigner: Chrome

Description
Heap buffer overflow in WebCodecs in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
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Meta Information
Published
2026-05-28
Last Modified
2026-05-29
Generated
2026-06-19
AI Q&A
2026-05-29
EPSS Evaluated
2026-06-18
NVD
CVE-2026-9939
EUVD
EUVD-2026-33081
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
google chrome to 148.0.7778.216 (exc)
google chrome to 148.0.7778.215 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
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Executive Summary

This vulnerability is a heap buffer overflow in the WebCodecs component of Google Chrome versions prior to 148.0.7778.216. It allows a remote attacker to execute arbitrary code inside a sandbox by using a specially crafted HTML page.

Impact Analysis

The impact of this vulnerability is that a remote attacker could potentially execute arbitrary code on your system within the sandbox environment of Google Chrome. This could lead to unauthorized actions or compromise of your browser security.

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