---
id: "CVE-2026-121113"
kind: "vulnerability"
aliases: ["CVE-2026-121113"]
title: "Chrome: PDFium buffer overflow lets a crafted PDF run code"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["browsers", "chrome", "desktop", "package", "pdf"]
not_affected_if: ["chrome-up-to-date"]
published_at: "2026-11-03T21:17:18+00:00"
first_seen_at: "2026-11-03T21:19:18+00:00"
updated_at: "2026-11-03T21:25:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121113", "first_seen_at": "2026-11-03T21:19:18+00:00"}]
---

# Chrome: PDFium buffer overflow lets a crafted PDF run code

A buffer overflow in PDFium, the PDF viewer built into Google Chrome, lets a remote attacker run arbitrary code inside the browser sandbox by opening a crafted PDF file. Chromium rates the flaw High severity.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Chrome version (chrome://settings/help or `google-chrome --version`) and compare it to the fixed release.
- Check managed fleets for Chrome builds older than `157.0.8103.38`.

## Fix

- Google Chrome: move to `157.0.8103.38` or later.

## Timeline

- 2026-11-03T21:19:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121113

## From the sources

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)

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_