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Google Chrome EUVDEUVD-2026-89376

| CVE-2026-102313 MEDIUM
Use of Uninitialized Resource (CWE-908)
2026-09-29 Chrome GHSA-rrvf-gg94-j22j
4.7
CVSS 3.1 · Vendor: Chrome
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Attack ChainAIDerived

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

  1. Access
    Victim visits crafted HTML page
  2. Delivery
    Page issues malicious WebGL/graphics calls
  3. Exploit
    ANGLE uses uninitialized resource
  4. Execution
    Read memory outside sandbox
  5. Impact
    Exfiltrate leaked memory contents

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Variable initialization
Exploitation Conditions

Exploitation requires a user to open or be redirected to attacker-controlled HTML in a vulnerable Chrome build (<154.0.8037.92) on Windows that exercises the ANGLE graphics path (WebGL/GPU-accelerated content). Limiting factors: user interaction is mandatory (UI:R - the victim must load the page), the impact is confined to a low-severity memory read (C:L, no write/RCE on its own), it is platform-specific to Windows, and a fixed version is already published, so patched or auto-updated installations are not exposed.

Impact

Signals are consistent and point to a genuine but LOW-priority issue. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N = 4.7 Medium) describes a remote, unauthenticated, low-complexity attack requiring user interaction (visiting a crafted page), with a scope change (S:C, reflecting a read that crosses the renderer sandbox boundary) but only LOW confidentiality impact and no integrity or availability impact. There is a notable severity divergence: Chromium rates this 'High' internally while NVD scores it 4.7 Medium - the gap is explained by the impact being a bounded memory-read/info-leak (CWE-908 uninitialized resource in ANGLE) rather than code execution. No EPSS score, no CISA KEV listing, and no public exploit are provided; exploitation status is 'no public exploit identified at time of analysis.' No SSVC data was supplied. A vendor patch is available. Net: real and worth patching in the normal cadence, but this is a high-internal-severity/low-real-world-risk info-disclosure primitive, typically valuable only as one link in a multi-bug exploit chain rather than a standalone priority.

Exploit ScenarioDerived

An attacker hosts or injects a crafted HTML page that drives Chrome's ANGLE (OpenGL ES-to-native graphics translation) layer into using an uninitialized resource, causing the renderer to read adjacent process memory outside the intended sandbox-managed allocation. The leaked bytes (e.g., pointers or cross-origin data) could be exfiltrated to defeat ASLR or aid a paired memory-corruption bug. No public exploit is identified, and user interaction (visiting the page) is required.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 29, 2026

Uninitialized resource handling in ANGLE, the GPU translation layer bundled with Google Chrome on Windows, lets a remote attacker who gets a victim to load a crafted HTML page trigger a memory read that crosses the browser's sandbox boundary, although the leak is limited to low-severity confidentiality impact (CVSS 4.7, C:L, S:C with no integrity or availability effect). Only Chrome builds on Windows prior to 154.0.8037.92 are affected; the attack is unauthenticated per the CVSS vector but requires user interaction (UI:R) - the victim must open or be redirected to attacker-controlled content that exercises the WebGL/GPU-accelerated path. No public exploit code identified at time of analysis, no confirmed active exploitation (CISA KEV), and Google has already published a fixed build, so the practical risk is low.

RemediationAI

Vendor-released patch: Google Chrome 154.0.8037.92 (Windows stable channel), which is the primary and complete fix - update to that build or later and fully restart the browser so the new GPU/renderer processes load the patched ANGLE library, then verify the installed version at chrome://version. Because Chrome auto-updates by default, most installations will be remediated without operator action; environments that pin browser versions should push 154.0.8037.92 through their update mechanism, and Microsoft-tagged Chromium derivatives such as Edge need their corresponding upstream build. No vendor workaround is documented, and the only meaningful interim mitigations are blunt: launch Chrome with --disable-gpu or disable the WebGL/WebGL2 features via chrome://flags to remove the ANGLE code path from reach - with the clear trade-off of breaking WebGL content and degrading rendering performance and battery life for all users - or restrict browsing to trusted sites until the update lands, which addresses the UI:R prerequisite but is not enforceable at scale. Reference advisories: https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01807488085.html and https://issues.chromium.org/issues/556789073.

Affected VersionsENISA

Chrome 154.0.8037.92 <154.0.8037.92

Affected Packages

euvd chrome fix: 154.0.8037.92

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-908 uninitialized resource bug in ANGLE (Almost Native Graphics Layer Engine), the OpenGL ES / WebGL translation layer Chrome uses on Windows to map WebGL calls onto Direct3D. When a crafted HTML page drives the graphics pipeline, ANGLE uses a resource (buffer, texture or shader-related allocation) before it has been fully initialized, so stale memory contents can be observed by the attacker. The CVSS vector scores scope change (S:C) with low confidentiality impact, reflecting the description's claim that the read can reach memory outside the renderer sandbox - the memory disclosure therefore crosses a privilege boundary even though it does not on its own yield code execution, data modification or denial of service. Exploitation is platform-specific (Windows ANGLE/D3D backend) and gated on user interaction: PR:N means no credentials are needed, but UI:R means the victim must load the attacker-controlled page for the bug to be reached. The associated CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* is platform-agnostic in ITS form, so the Windows-only scope comes from the vendor description rather than the CPE string.

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Severity by source

Vendor (Chrome) PRIMARY 4.7 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
vuln.today AI 4.7 MEDIUM

Remote crafted page needs no auth but requires the victim to load it (UI:R); reading memory across the sandbox boundary is a scope change (S:C) with a bounded low-confidentiality leak and no integrity/availability impact.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
Red Hat 7.4 HIGH

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

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

Lifecycle Timeline

3
Patch available
Sep 29, 2026 - 21:04 EUVD
CVE Published
Sep 29, 2026 - 19:45 cve.org
MEDIUM 4.7
CVE Published
Sep 29, 2026 - 19:45 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Uninitialized resource in ANGLE in Google Chrome on on Windows prior to 154.0.8037.92 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Threat Intelligence Overview

EPSS Score
0.3%
Top 82% exploitable
Prevalence
Ubiquitous
Google Chrome is among the most widely deployed browsers worldwide
Data Quality
7 sources
Confidence: High

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
High
Technical Impact
Partial

Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +24
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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Vendor StatusVendor

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