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Google Chrome CVE-2026-113188

| EUVDEUVD-2026-105427 HIGH
Buffer Overflow (CWE-119)
2026-10-20 chrome-cve-admin@google.com GHSA-vcvh-r6r6-gjff
8.8
CVSS 3.1 · Vendor: google
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Lure victim to crafted HTML page
  2. Exploit
    Trigger memory corruption in GPU component
  3. Execution
    Execute arbitrary code in sandboxed process
  4. Impact
    Achieve code execution confined to Chrome sandbox

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the victim to navigate to or load attacker-controlled crafted HTML content in Google Chrome versions prior to 156.0.8078.47 (UI:R user interaction is mandatory), triggering memory corruption in the GPU component - no authentication or special configuration is needed as this affects default Chrome installations. The key LIMITING factors are: (1) required user interaction - a victim must visit the malicious page; and (2) Scope:Unchanged with code execution occurring 'inside the sandbox,' meaning this bug alone does not escape Chrome's sandbox or reach the underlying OS, so a separate sandbox-escape vulnerability would be required for full host compromise.

Impact

This is a genuine priority-tier vulnerability but with an important caveat. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8) indicates network-reachable, low-complexity, unauthenticated exploitation requiring only that the victim load a crafted HTML page - a trivially satisfied condition for a web browser. Google rates the Chromium security severity as High, and the bug class (CWE-119 memory corruption in the GPU component) is historically a reliable path to attacker-controlled code execution. However, the description explicitly states code execution occurs 'inside the sandbox,' which is consistent with the Scope:Unchanged (S:U) metric: this flaw alone does NOT escape Chrome's sandbox or compromise the host, so real-world weaponization typically requires chaining with a separate sandbox-escape bug. On exploitation signals, there is a conflict between availability and certainty: no EPSS score, no CISA KEV listing, and no public POC were provided in the input, so there is no evidence of active exploitation or widespread automated attacks at this time. The combination of ubiquitous product footprint, a clean high CVSS, and a vendor patch makes this a high-priority patch item, but the absence of KEV/POC/EPSS data means the current threat is potential rather than confirmed. Note the headline 8.8 somewhat overstates standalone impact because the sandbox confines the achieved code execution.

Exploit ScenarioDerived

An attacker hosts or injects a malicious web page containing crafted content that drives Chrome's GPU process into a memory-corruption condition; when a victim simply visits the page (UI:R, no authentication required), the attacker can potentially execute arbitrary code within the browser's sandbox. No public exploit code was identified in the provided data, and full host compromise would require pairing this with a separate sandbox-escape vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Memory corruption in Google Chrome's GPU component allows remote attackers to potentially execute arbitrary code inside the browser sandbox when a victim loads a crafted HTML page in versions prior to 156.0.8078.47. Exploitation requires user interaction, and because the scope is unchanged the flaw does not by itself escape Chrome's sandbox or compromise the host operating system. No public exploit code or confirmed active exploitation was identified at time of analysis, though the vendor rates the issue High severity with a CVSS score of 8.8.

RemediationAI

Upgrade Google Chrome to version 156.0.8078.47 or later; Google has released a fixed build distributed through the normal stable-channel auto-update mechanism. Verify the installed version via chrome://settings/help and restart the browser after updating so the new binary is loaded. The vendor advisory is at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html and the Chromium issue is at https://issues.chromium.org/issues/533122125. If immediate patching is not possible, reduce exposure by preventing users from browsing untrusted or attacker-controlled HTML content and by enforcing browser isolation for high-risk web use; disabling GPU acceleration is not a reliable mitigation and would degrade rendering performance.

Affected VersionsENISA

Chrome 156.0.8078.47 <156.0.8078.47

Affected Packages

euvd chrome fix: 156.0.8078.47

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a CWE-119 improper restriction of operations within the bounds of a memory buffer in Chrome's GPU process, the component responsible for hardware-accelerated rendering and GPU command handling. A crafted HTML page can trigger out-of-bounds memory operations in that process, corrupting memory in a way that may permit arbitrary code execution within the GPU process's sandbox. Chrome's multi-process design confines the GPU process, so successful exploitation yields code execution inside the sandbox rather than direct host access; a separate sandbox-escape vulnerability would be required for full system compromise. The CVSS vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H reflects network-delivered content, low attack complexity, no privileges required, mandatory user interaction, and high confidentiality, integrity, and availability impact confined to the unchanged scope.

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Severity by source

Vendor (google) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Remote crafted page needs no auth (PR:N) but requires the victim to load it (UI:R); code execution stays within the sandbox so Scope is Unchanged (S:U).

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (google).

CVSS VectorVendor: google

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
CVSS changed
Oct 21, 2026 - 00:23 NVD
8.8 (HIGH)
Patch available
Oct 20, 2026 - 23:20 EUVD
CVE Published
Oct 20, 2026 - 22:19 cve.org
HIGH 8.8

DescriptionCVE.org

Memory corruption in GPU in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

Executive ViewAI

Why It Matters

Google Chrome versions prior to 156.0.8078.47 contain a high-severity memory-corruption flaw in the GPU component that could allow a crafted web page to execute code within the browser sandbox when a user interacts with malicious content; no public exploit was identified at time of analysis. Because Chrome is widely deployed and exploitation requires user interaction but does not escape the browser sandbox, leadership should prioritize rapid patching to reduce user-level risk without treating this as a host-compromise emergency.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% exploitable
Prevalence
Ubiquitous
Google Chrome is among the most widely deployed browsers globally
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Medium

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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