CVE-2026-9939
Undergoing Analysis
Undergoing Analysis - In Progress
Heap Buffer Overflow in Google Chrome WebCodecs
Publication date: 2026-05-28
Last updated on: 2026-05-29
Assigner: Chrome
Description
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)
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| chrome | to 148.0.7778.216 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| 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(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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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