Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessLure victim to crafted HTML page
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ExploitTrigger uninitialized resource in Dawn/WebGPU
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ExecutionRead memory outside sandbox
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ImpactExfiltrate leaked data to attacker
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Variable initialization
|
| Exploitation Conditions | Exploitation requires the victim to load a crafted HTML page in a vulnerable Chrome build on Android prior to 155.0.8059.39, and the affected code path is Dawn, Chrome's WebGPU implementation, so content that exercises WebGPU/graphics processing is needed to reach the uninitialized resource. Key limiting factors: user interaction is mandatory (UI:R - the attacker cannot trigger this without the victim visiting attacker-influenced content), the impact is confined to a LOW-confidentiality out-of-sandbox memory read (no write/integrity or availability impact), and per the description the exposure is specific to the Android platform despite the generic CPE. No special authentication or privileged configuration is required (PR:N). |
| Impact | This is a genuinely low-to-moderate priority issue despite affecting a ubiquitous product. The signals are largely consistent and point AWAY from urgency: CVSS is only 4.7 (Medium), Chromium's own severity rating is Medium, EPSS is 0.19% at the 8th percentile (very low predicted exploitation probability), the vulnerability is NOT on the CISA KEV list, and no public proof-of-concept is referenced. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N) shows a network-reachable, low-complexity, unauthenticated flaw, but one that REQUIRES user interaction (UI:R - the victim must visit a crafted page) and yields only LOW confidentiality impact with NO integrity or availability impact. The scope change (S:C) is meaningful here because the attacker reads memory OUTSIDE the renderer sandbox, which is why this rates above a trivial info leak, but a single Medium-severity uninitialized-memory read (CWE-908) is typically useful only as one primitive in a larger exploit chain, not as a standalone compromise. One caveat to verify: the description scopes this to 'Google Chrome on Android,' yet the CPE string is the generic cpe:2.3:a:google:chrome (no platform/Android qualifier), so the affected-platform breadth should be confirmed against the Chrome release notes rather than the CPE alone. |
| Exploit ScenarioDerived | An attacker hosts or compromises a web page containing crafted HTML/graphics content that triggers the uninitialized resource in the Dawn (WebGPU) implementation. When a victim using a vulnerable Chrome build on Android navigates to the page, the flaw leaks a small amount of memory from outside the browser sandbox back to attacker-controlled script. No public exploit code was identified at time of analysis; realistically this would serve as an information-disclosure primitive (e.g., defeating ASLR) feeding a larger exploit chain rather than a direct compromise. |
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Alert meAnalysisAIv1 – Oct 07, 2026
Out-of-sandbox memory disclosure affects Google Chrome on Android builds prior to 155.0.8059.39, where an uninitialized resource in Dawn, Chrome's WebGPU implementation, can be triggered by a crafted HTML page to leak memory contents. Exploitation is constrained: it requires the victim to open attacker-influenced content that exercises WebGPU (user interaction is mandatory, UI:R) and yields only a LOW-confidentiality read with no integrity or availability impact, giving a CVSS 3.1 base score of 4.7 and EPSS of just 0.19% (8th percentile). No public exploit code has been identified at time of analysis, this CVE is not on CISA KEV, and a vendor patch is available in Chrome 155.0.8059.39.
RemediationAI
Vendor-released patch: upgrade Chrome on Android to 155.0.8059.39 or later, distributed through Google Play (or the applicable managed app channel), and verify the installed version after the update; the fix is documented in the Chrome stable channel advisory at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html, with technical details in the Chromium issue at https://issues.chromium.org/issues/553121488. Given that exploitation requires the user to load crafted content that reaches the WebGPU path and yields only a low-severity out-of-sandbox memory read, patching on the normal update cadence is proportionate, though managed fleets should treat it as a routine update rather than an emergency. Where immediate updating is not possible, reduce exposure by restricting high-risk browsing to trusted sites, enforcing Safe Browsing and site-isolation settings, and, if operationally acceptable, disabling WebGL/WebGPU in the browser or via enterprise configuration; note that these controls degrade or break graphics-accelerated web applications and browser-based 3D/gaming workloads, and they are compensating measures only, not replacements for the 155.0.8059.39 upgrade. No public exploit code has been identified at time of analysis, so detection efforts should focus on unexpected browser crashes or anomalous GPU-process behavior rather than a known indicator set.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Technical ContextAI · show details
The root cause is CWE-908 (Use of Uninitialized Resource) inside Dawn, the open-source, cross-platform graphics abstraction layer that backs Chrome's WebGPU API and translates WebGPU calls onto platform graphics stacks such as Vulkan and OpenGL ES on Android. A resource that is allocated but never initialized is consumed by the graphics path, so stale contents of the underlying GPU/host memory are returned rather than deterministic data. Because the affected code runs in Chrome's GPU process, the disclosure crosses the process/sandbox boundary (reflected in the CVSS scope-change flag S:C) even though the confidentiality impact is rated LOW and there is no write or denial-of-service component. The attack surface is web content that reaches the WebGPU code path; the affected CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* is a generic Chrome identifier that does not encode the Android-only applicability described by the vendor, so the platform restriction comes from the advisory rather than the CPE. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N confirms network reachability with no privileges required, but mandates victim interaction and caps impact at low confidentiality loss.
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Network-reachable via a crafted page (AV:N/AC:L/PR:N) but needs the victim to visit it (UI:R); reading memory outside the sandbox changes scope (S:C) with only limited confidentiality impact (C:L, I:N, A:N).
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Uninitialized resource in Dawn in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
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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EUVD-2026-93761
GHSA-ph55-rqpm-cxcp
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB