CVE-2026-6305
Modified Modified - Updated After Analysis
Heap Buffer Overflow in PDFium Enables Remote Code Execution

Publication date: 2026-04-15

Last updated on: 2026-05-27

Assigner: Chrome

Description
Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)
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Meta Information
Published
2026-04-15
Last Modified
2026-05-27
Generated
2026-06-16
AI Q&A
2026-04-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-6305
EUVD
EUVD-2026-23052
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
google chrome to 147.0.7727.101 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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 PDFium, a component used in Google Chrome versions prior to 147.0.7727.101. It allows a remote attacker to execute arbitrary code inside a sandbox by using a specially crafted PDF file.

Impact Analysis

The vulnerability can lead to remote code execution within the sandbox environment of Google Chrome. This means an attacker could potentially run malicious code on your system by tricking you into opening a crafted PDF file, which could compromise your data, privacy, or system integrity.

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