Heap Buffer Overflow in PDFium Enables Remote Code Execution

Publication date: 2026-04-15

Last updated on: 2026-05-26

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)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-15

Last Modified

2026-05-26

Generated

2026-07-06

AI Q&A

2026-04-15

EPSS Evaluated

2026-07-05

NVD

CVE-2026-6306

EUVD

EUVD-2026-23054

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 147.0.7727.101 (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

Executive Summary

This vulnerability is a heap buffer overflow in PDFium, a component of Google Chrome, affecting versions prior to 147.0.7727.101. It allows a remote attacker to execute arbitrary code within a sandbox environment by using a specially crafted PDF file.

Impact Analysis

The vulnerability can allow an attacker to run arbitrary code on your system through a malicious PDF file, potentially compromising the security of your device even though the code execution occurs inside a sandbox.

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