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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ExploitPage triggers DataTransfer memory corruption
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ExecutionCorrupt renderer heap/control flow
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ImpactExecute arbitrary code inside sandbox
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 the victim to load attacker-controlled web content (a crafted HTML page) in an unpatched Chrome build prior to 156.0.8078.47, exercising the DataTransfer component (clipboard/drag-and-drop data handling). The CVSS vector's UI:R confirms user interaction (navigating to or opening the malicious page) is mandatory, which is the primary limiting factor. Critically, the description states code execution occurs 'inside the sandbox' (scope S:U), so this bug alone does not escape the renderer or compromise the OS - a separate sandbox-escape vulnerability would be needed for host-level impact, substantially limiting realistic severity. No authentication is required (PR:N). |
| Impact | Multiple severity signals partially conflict and must be weighed carefully. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8) describes network-reachable, low-complexity, unauthenticated exploitation requiring only that a victim open a crafted HTML page - a typical high-severity browser profile. However, Google's own Chromium rating is only 'Medium', and the description explicitly scopes code execution to 'inside the sandbox,' meaning a successful exploit of this single bug does NOT by itself compromise the host (scope is correctly S:U); a full compromise would require chaining a separate sandbox-escape, which materially lowers standalone real-world risk versus the 8.8 number. No EPSS score was provided, so exploitation probability cannot be quantified. This CVE is NOT in CISA KEV and no POC or public exploit is referenced, and no SSVC decision data was supplied. Net: this is a legitimately patch-worthy renderer memory-corruption bug in a ubiquitous product, but the combination of a Medium vendor rating, sandbox-confined impact, and absence of any exploitation evidence suggests it is a routine 'patch-in-cycle' Chrome update rather than an emergency. Conflicting signal stated explicitly: CVSS base score (8.8 High) versus Chromium's Medium severity and sandbox-only impact - defenders should treat the sandbox confinement, not the raw 8.8, as the decisive factor. |
| Exploit ScenarioDerived | An attacker hosts or compromises a web page containing a crafted DataTransfer payload (e.g., abusing clipboard/drag-and-drop data handling) and lures a victim running an unpatched Chrome build to visit it. When the page is rendered, the memory corruption in the DataTransfer component is triggered, allowing the attacker to potentially execute arbitrary code within the renderer sandbox. No public exploit or POC is referenced in the provided data, so this scenario is theoretical based on the vulnerability class. |
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Alert meAnalysisAIv1 – Oct 21, 2026
Memory corruption in Google Chrome's DataTransfer component can potentially allow a remote attacker to execute arbitrary code inside the browser sandbox when a victim opens a crafted HTML page in a build prior to 156.0.8078.47. The CVSS 8.8 rating reflects high confidentiality and integrity impact, but exploitation requires user interaction (UI:R) and does not by itself escape the renderer sandbox (S:U), so host-level compromise would require a separate sandbox-escape vulnerability. No public exploit code has been identified at time of analysis, and Google has released a fixed build, 156.0.8078.47.
RemediationAI
Vendor-released patch: 156.0.8078.47. Upgrade Google Chrome to 156.0.8078.47 or later and confirm the installed version through chrome://version or enterprise version reporting; the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html provides the vendor guidance. If immediate upgrade is not possible, reduce exposure by preventing users from opening untrusted HTML pages in unpatched Chrome and by isolating or restricting that browser profile; disabling JavaScript or drag-and-drop can reduce the attack surface but breaks normal web functionality and is not a complete fix. The renderer sandbox limits the impact of code execution inside the sandbox, but it should be treated as defense in depth rather than a substitute for applying the vendor patch.
Affected VersionsENISA
Affected Packages
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 classified as CWE-119, improper restriction of operations within the bounds of a memory buffer, in Chrome's DataTransfer handling path, which supports HTML5 drag-and-drop and clipboard-style data exchange between web content and the browser. A crafted HTML page can trigger out-of-bounds memory operations in the renderer, corrupting memory and potentially redirecting execution within that process. The CVSS vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H indicates a network-reachable, low-complexity attack that requires the victim to load attacker-controlled content and needs no authentication, while S:U confirms the impact stays within the same security authority as the vulnerable component. Because Chrome renders web content in a sandboxed process, code execution described as 'inside the sandbox' does not directly compromise the operating system; escaping to the host would require chaining a separate sandbox-escape bug. No CPE strings were included in the supplied data, so product matching should use the Chrome Releases advisory and the version boundary.
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Remote crafted page, no privileges needed (PR:N) but requires the user to open it (UI:R); impact stays within the renderer sandbox so scope is Unchanged (S:U).
Primary rating from Vendor (google).
CVSS VectorVendor: google
Lifecycle Timeline
3DescriptionCVE.org
Memory corruption in DataTransfer in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Executive ViewAI
Google Chrome versions prior to 156.0.8078.47 contain a memory corruption flaw in the DataTransfer component that could let an attacker run code within the browser sandbox when a user opens a crafted web page. Because exploitation requires user interaction and does not by itself enable host compromise, the primary organizational exposure is to users' browser sessions and data rather than full endpoint takeover. Leadership should prioritize updating Chrome across the estate, as the browser is widely deployed and the vendor has released a fixed build.
Apply vendor patch.
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
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.
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EUVD-2026-105615
GHSA-6q7q-5mxm-x568
NVD
CVE.org
EPSS
Exploit-DB