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Google Chrome CVE-2026-102307

| EUVDEUVD-2026-89379 MEDIUM
Use of Uninitialized Resource (CWE-908)
2026-09-29 Chrome GHSA-p59f-q4j9-wm5r
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
    Lure victim to crafted HTML page
  2. Exploit
    Trigger uninitialized Dawn/WebGPU resource
  3. Execution
    Read memory outside sandbox
  4. Impact
    Exfiltrate leaked bytes to attacker

Vulnerability Assessment

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

Requires the victim to load attacker-controlled HTML in Chrome for Android prior to 154.0.8037.92 that exercises the Dawn WebGPU graphics backend (i.e. WebGPU must be reachable/enabled for the crafted content). Limiting factors: user interaction is required (UI:R - the victim must visit the page), and while no authentication is needed (PR:N), the payoff is a low-confidence memory read only, useful chiefly as an information-leak building block rather than standalone compromise. Scoped to the Android platform per the advisory.

Impact

Signals are consistent and point to a genuine but low-severity issue. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N = 4.7) reflects a network-reachable flaw needing only that a victim load a crafted HTML page (UI:R), with a scope change (S:C) because memory is read OUTSIDE the renderer sandbox, but impact is limited to a low-confidence read (C:L) with no integrity or availability effect. Note the divergence between Chromium's internal 'High' severity rating and the NVD-style 4.7: Chromium rates memory-safety bugs by worst-case potential, while the scored vector captures the confirmed info-leak-only impact - treat 4.7 as the realistic figure. No EPSS score, no CISA KEV listing, and no public POC were provided, so this is 'no public exploit identified at time of analysis' - not active exploitation. A patch is available from the vendor. Bottom line: real but low-priority; an information-disclosure primitive (often useful only as one link in a larger exploit chain, e.g. ASLR defeat) rather than a directly weaponizable RCE.

Exploit ScenarioDerived

An attacker hosts a malicious web page that drives Chrome's Dawn WebGPU backend to use an uninitialized graphics resource; when an Android user visits the page, the flaw leaks bytes of memory from outside the renderer sandbox back to attacker-controlled script. No public exploit code is identified, and the low confidentiality impact means the leaked data is partial rather than a full memory dump.

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 Dawn, Chromium's WebGPU implementation, exposes Chrome for Android builds prior to 154.0.8037.92 to out-of-bounds memory reads triggered by a crafted HTML page (CWE-908). A remote attacker who convinces a victim to load the malicious content can leak limited graphics-process memory that may fall outside the browser sandbox boundary, although the CVSS 3.1 score of 4.7 with C:L/I:N/A:N indicates the payoff is a low-confidence information disclosure rather than code execution. No public exploit code or confirmed active exploitation has been identified at time of analysis, and the vendor has released a fixed build.

RemediationAI

Vendor-released patch: upgrade Chrome for Android to 154.0.8037.92 or later via Google Play, or to the corresponding stable channel build listed in the advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01807488085.html; enterprise fleets using managed Play or Chrome Browser Cloud Management should push the minimum version pin 154.0.8037.92 and verify compliance. If immediate upgrade is not possible, the exposure can be reduced by disabling the WebGPU backend on affected Android devices through enterprise policy or chrome://flags, which prevents attacker-controlled pages from reaching the vulnerable Dawn allocation path at the cost of breaking WebGPU-dependent web applications and any internal sites that rely on it; a restart is required for the setting to take effect and users can re-enable it unless the policy is enforced. Because exploitation depends on the victim visiting attacker-controlled HTML (UI:R), restricting navigation to untrusted content via Safe Browsing, URL blocklisting, and network-level content filtering provides additional but non-authoritative risk reduction. Note that the leak is an information-disclosure primitive only (C:L, I:N, A:N); no memory-corruption mitigation beyond patching is warranted, and no vendor-published workaround supersedes the fixed build.

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

Dawn is the cross-platform implementation of the WebGPU standard shipped inside Chromium, responsible for translating WebGPU API calls into native graphics commands (Vulkan, Metal, D3D12). CWE-908 (Use of Uninitialized Resource) means a memory buffer or object in Dawn's resource-allocation path was consumed before being initialized, so the caller may observe stale contents from previously freed or reused graphics memory. Because WebGPU work is dispatched through the browser's graphics/GPU process, a leak of this kind can cross the sandbox scope boundary, which is reflected in the assessed CVSS vector's S:C component. The vulnerability is platform-scoped to Android per the Chrome release advisory; the supplied CPE (cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*) is not platform-qualified and should be constrained to Android builds below 154.0.8037.92. The attack requires the victim to render attacker-supplied HTML that exercises the WebGPU backend (AV:N/AC:L/PR:N/UI:R), with no authentication needed but mandatory user interaction.

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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

Network-reachable via crafted page (AV:N/AC:L/PR:N) needing a visit (UI:R); reading memory outside the sandbox is a scope change (S:C) with low confidentiality-only impact (C:L, I/A:N).

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:L/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 Dawn in Google Chrome on on Android 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
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 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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