CVE-2026-121113

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Buffer Overflow in Google Chrome PDFium

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Buffer overflow in PDFium in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted PDF file. (Chromium security severity: High)

CVSS Scores

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Meta Information

Published

2026-11-03

Last Modified

2026-11-03

Generated

2026-11-04

AI Q&A

2026-11-04

EPSS Evaluated

N/A

NVD

CVE-2026-121113

EUVD

EUVD-2026-116523

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Chrome	157.0.8103.38

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 buffer overflow in PDFium, which is the PDF rendering engine used in Google Chrome. A buffer overflow occurs when a program writes more data to a buffer than it can hold, causing it to overflow into adjacent memory. In this case, a remote attacker could exploit this by crafting a specially designed PDF file to trigger the overflow and execute arbitrary code within the Chrome sandbox.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your device by tricking you into opening a malicious PDF file. Since the code runs inside Chrome's sandbox, it may be limited in what it can do, but it could still lead to data theft, installation of malware, or unauthorized access to your system.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the buffer overflow vulnerability in PDFium.

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