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Google Chrome CVE-2026-113273

| EUVDEUVD-2026-105444 HIGH
Buffer Overflow (CWE-119)
2026-10-20 chrome-cve-admin@google.com GHSA-qrfw-4v3j-x8f9
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. Delivery
    Deliver malformed ANGLE/graphics input
  3. Exploit
    Trigger memory corruption in renderer
  4. Execution
    Execute arbitrary code inside sandbox
  5. Impact
    (chain sandbox escape for host impact)

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 a victim using an affected Chrome build (prior to 156.0.8078.47) to load attacker-controlled web content that exercises the vulnerable ANGLE graphics path - the UI:R metric confirms user interaction (visiting/rendering a crafted HTML page) is mandatory, which is the primary limiting factor. No authentication or special privileges are needed (PR:N, unauthenticated). A key impact limitation: code execution is confined to the browser sandbox (renderer process) per the description, so achieving full host-level compromise requires an additional, separate sandbox-escape vulnerability not covered by this CVE.

Impact

This is a genuine priority despite the absence of exploitation signals. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U) describes a network-reachable, low-complexity, unauthenticated memory-corruption flaw (CWE-119) requiring only that a victim visit a crafted HTML page - the classic drive-by browser-exploit profile, which keeps real-world risk elevated even with UI:R. Google rates the Chromium severity as High and a vendor patch is available (fixed in 156.0.8078.47). Countervailing signals: there is no CISA KEV listing, no EPSS score was provided, and no public exploit code is referenced, so there is no evidence of active exploitation at this time. One important scoping caveat the base score understates: the description explicitly states code execution occurs 'inside the sandbox,' meaning a successful exploit is confined to the renderer process and would require a separate sandbox-escape chain to achieve full host compromise - the C:H/I:H/A:H rating reflects renderer-context impact, not host takeover. Net assessment: patch promptly as a high-priority browser update, but this is standard high-severity browser hardening rather than confirmed in-the-wild emergency; EPSS/KEV data is missing, so exploitation probability cannot be quantified from the provided inputs.

Exploit ScenarioDerived

An attacker hosts or compromises a web page containing specially crafted content that triggers the ANGLE memory-corruption bug when rendered by a vulnerable Chrome build. A victim is lured into visiting the page (via phishing, malvertising, or a watering-hole), and the malformed input corrupts memory in the renderer, allowing arbitrary code execution within Chrome's sandbox. No public exploit code is identified at time of analysis, and full host compromise would additionally require chaining a sandbox escape.

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 ANGLE, the graphics translation layer used by Google Chrome, allows unauthenticated remote attackers to execute arbitrary code inside the browser sandbox when a victim renders a crafted HTML page in any Chrome build prior to 156.0.8078.47. The CVSS:3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, 8.8) confirms no credentials or special privileges are needed, but exploitation hinges on the user interaction metric - the target must actually visit or render the attacker-supplied content - and the impact is explicitly bounded to the renderer sandbox, so full host compromise would require chaining a separate sandbox-escape flaw. No public exploit code or confirmed active exploitation was identified at the time of analysis, and Google has released Chrome 156.0.8078.47 to address the defect (Chromium severity: High).

RemediationAI

Vendor-released patch: upgrade Google Chrome to 156.0.8078.47 or later - desktop users can force the update through chrome://settings/help and restart the browser (updates do not apply to a running session), while managed fleets should push the fixed build via their enterprise software deployment tooling and verify reported versions against the vendor advisory at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html. Until the fixed build is universally deployed, the most direct compensating control is to disable WebGL rendering (launching Chrome with --disable-webgl, or disabling GPU rasterization/WebGL through managed configuration), which removes the primary ANGLE attack surface reachable from web content at the cost of breaking 3D web applications, mapping interfaces, and browser-based CAD or visualization tools. Keep the renderer sandbox enabled and avoid running with --no-sandbox, since the sandbox is what limits this bug to renderer-process compromise rather than host takeover; restricting users to a curated allowlist of trusted sites, or forcing high-risk browsing through an isolated remote-browsing environment, further reduces exposure with the trade-off of reduced usability and added latency. There is no indication that a non-upgrade software workaround fully addresses the underlying memory-corruption defect.

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

ANGLE (Almost Native Graphics Layer Engine) is the cross-platform graphics abstraction shipped with Chromium that implements the OpenGL ES and EGL APIs on top of Vulkan, Direct3D 11, Metal, and desktop OpenGL; it is the component through which WebGL content in the renderer is translated to the platform's native GPU API. The flaw is classified as CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), meaning the underlying defect is an out-of-bounds read/write or similar bounds violation in ANGLE's buffer handling - typically reached by supplying malformed geometry, texture, or shader data that the translation layer processes without adequate length validation, corrupting heap memory in the renderer process. Because the vulnerable code executes in the sandboxed renderer rather than the browser broker process, a successful exploit yields code execution with renderer-process privileges only. The CVSS temporal picture is shaped by UI:R (a crafted page must be loaded) and the absence of any authentication prerequisite (PR:N).

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  • Exploit and PoC references, threat intelligence from 22 sources

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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 HTML needs no privileges (PR:N) but requires the victim to open the page (UI:R); sandbox-confined RCE keeps scope unchanged (S:U) with high C/I/A in the renderer.

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
Red Hat 8.8 HIGH

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

Executive ViewAI

Why It Matters

Google Chrome builds prior to 156.0.8078.47 contain a high-severity memory-corruption flaw in ANGLE that can let an unauthenticated attacker execute code inside the browser sandbox when a user renders a crafted HTML page. The flaw affects a broadly deployed browser, requires user interaction, and no public exploit was identified at time of analysis, while impact is initially confined to the renderer sandbox. Leadership should prioritize patching unpatched Chrome endpoints because host-level compromise would require chaining a separate sandbox escape.

Business Impact: High
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 worldwide
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
High

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.

Vendor StatusVendor

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