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Google Chrome EUVDEUVD-2026-105674

| CVE-2026-113143 HIGH
Buffer Overflow (CWE-119)
2026-10-20 chrome-cve-admin@google.com GHSA-qmwm-8h6v-vg78
8.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Lure victim to crafted web page
  2. Exploit
    Chrome renders malicious content in ANGLE
  3. Execution
    Trigger memory corruption in graphics layer
  4. Impact
    Read sensitive process memory

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 user running Google Chrome prior to 156.0.8078.47 to load an attacker-controlled or attacker-injected HTML page that exercises the vulnerable ANGLE code path; this is reflected by UI:R in the CVSS vector, so some user interaction (visiting/rendering the page) is the primary limiting factor. No authentication is required (PR:N) and no special non-default configuration is indicated - ANGLE is Chrome's default graphics translation layer, so default desktop installs are affected. The description does not state the specific rendering operation or content that triggers the memory corruption, so the exact trigger is not described in the available sources. Limiting factors beyond user interaction: the victim must be on an unpatched build, and the disclosed impact per the description is reading memory rather than confirmed code execution.

Impact

Signals conflict and should be reconciled before prioritizing. NVD scores this 8.8 (High) with vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, yet the Chromium project rated it Medium, and the description states only that an attacker can 'read memory' - i.e. information disclosure/confidentiality - which does not obviously support the C:H/I:H/A:H (full integrity and availability) impact in the NVD vector; this mismatch should be verified with the vendor. Exploitation signals are low: EPSS is 0.22% (11th percentile), the CVE is not in CISA KEV, and no public exploit was identified in the provided data (the chromium issue tracker link is a restricted bug reference, not working exploit code). The vuln.today decision label is 'this_week', consistent with a patched browser flaw requiring user interaction (UI:R) rather than an emergency. Net: this is a patch-on-the-normal-browser-update-cadence issue - a genuine memory-safety bug in a near-ubiquitous product, but current exploitation probability is low and no in-the-wild activity is confirmed. The main caveat is the severity/impact disagreement (NVD High + C/I/A:H vs Chromium Medium + read-only description).

Exploit ScenarioDerived

An attacker hosts or injects a crafted HTML page that drives Chrome's ANGLE graphics component into a memory-corruption condition when the page is rendered. A victim running a vulnerable Chrome build (prior to 156.0.8078.47) simply visits the page, and the flaw lets the attacker read process memory, potentially leaking sensitive in-browser data. No public exploit code was identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 22, 2026

Memory corruption in ANGLE, the graphics translation layer built into Google Chrome, allows a remote attacker to read memory from the browser process when a victim renders a crafted HTML page on any build prior to 156.0.8078.47. Exploitation needs user interaction (the victim must load the page) but no credentials, and the disclosed impact is a confidentiality breach via memory disclosure rather than confirmed code execution, so the independent assessment scores it AV:N/AC:L/PR:N/UI:R/C:H/I:N/A:N rather than the vendor-supplied 8.8 with full integrity and availability impact. Chrome's own severity rating is Medium, EPSS is 0.22% (11th percentile), and no public exploit code has been identified at time of analysis; Google has released a fix in the 156.0.8078.47 stable channel update.

RemediationAI

Google has shipped the fix in Chrome 156.0.8078.47, so the complete remediation is to update to that build or later through the browser's built-in updater and relaunch, or by deploying the corresponding enterprise MSI/PKG/DEB/RPM package from the stable channel advisory at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html; because Chrome applies updates on restart, an outstanding relaunch leaves the host on the vulnerable build. Patch availability is confirmed by the vendor ('Available from vendor'), and the tracked Chromium issue is https://issues.chromium.org/issues/563352451. The supplied references document no workaround and identify no configuration that removes exposure other than updating, since ANGLE is a default-on component used for WebGL and accelerated canvas rendering; disabling hardware acceleration or WebGL may reduce practical exposure but is not a vendor-stated fix, would break GPU-accelerated content, and still leaves the vulnerable code installed. Prioritization is set to this_week rather than emergency: EPSS is 0.22% (11th percentile), there is no CISA KEV listing, and no public exploit code has been identified at time of analysis, while the assessed impact is limited to memory disclosure (C:H, I:N, A:N) contingent on the user rendering the crafted page.

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 open-source graphics abstraction shipped inside Chrome that implements OpenGL ES semantics on top of Direct3D, Metal, Vulkan or desktop OpenGL; web content reaches it through WebGL and hardware-accelerated canvas rendering. The flaw is classified CWE-119 (improper restriction of operations within the bounds of a memory buffer), which in this component means a graphics operation can produce an out-of-bounds memory access reachable from a rendered page, and the disclosure specifically describes the outcome as reading memory. The CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* is fully wildcarded, indicating the affected scope is Chrome itself rather than a separately versioned library, and the EUVD record points at builds below 156.0.8078.47. The available sources do not describe the specific GL/WebGL call sequence, shader or resource that triggers the corruption, so the exact trigger is not described in the available sources; what is confirmed is the affected component (ANGLE), the access vector (rendered HTML), and the disclosed impact (memory read). Because ANGLE is enabled by default on desktop installs, no non-default configuration is required to be exposed.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 6.5 MEDIUM

Delivered via a crafted web page (AV:N, UI:R) with no auth (PR:N); description states only memory read, so C:H with I:N/A:N, diverging from NVD's C:H/I:H/A:H.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Red Hat 6.5 MEDIUM

Primary rating from NVD.

CVSS VectorNVD

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

Lifecycle Timeline

4
CVSS changed
Oct 22, 2026 - 15:37 NVD
8.8 (HIGH)
Patch available
Oct 20, 2026 - 23:20 EUVD
CVE Published
Oct 20, 2026 - 22:19 nvd
HIGH 8.8
CVE Published
Oct 20, 2026 - 22:19 cve.org
UNKNOWN (no severity yet)

DescriptionNVD

Memory corruption in ANGLE in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to read memory via a crafted HTML page. (Chromium security severity: Medium)

Executive ViewAI

Why It Matters

Google Chrome versions prior to 156.0.8078.47 contain a high-severity memory corruption vulnerability in ANGLE that could allow an attacker to read sensitive browser process memory when a user visits a crafted webpage. This affects all employees using unpatched Chrome, potentially exposing confidential data, though no active exploitation has been observed. Leadership should prioritize patching to mitigate risk.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% 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 0.2%
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.

Vendor StatusVendor

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