---
id: CVE-2026-121163
title: >-
  Improper input validation in Browser in Google Chrome prior to 157.0.8103.38
  allowed a remote attacker who had compromised the renderer process to execute
  arbitrary code outside the sandbox via crafted network traffic
summary: >-
  Improper input validation in Browser in Google Chrome prior to 157.0.8103.38
  allowed a remote attacker who had compromised the renderer process to execute
  arbitrary code outside the sandbox via crafted network traffic. (Chromium
  security…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H'
cvssSource: adp
cwe:
  - CWE-20
vendor: Google
product: Chrome
affected:
  - Chrome >= 157.0.8103.38 < 157.0.8103.38
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-04T00:00:00+00:00'
published: '2026-11-03'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T04:56:12.891Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121163'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html
  - url: 'https://issues.chromium.org/issues/556221528'
tags:
  - cve.org
epss: 0.0021
epssPercentile: 0.11337
ingestedAt: '2026-11-05T21:36:00.753Z'
---

## Overview

Improper input validation in Browser in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: Medium)

## Affected

- `Chrome >= 157.0.8103.38 < 157.0.8103.38`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.