Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Inappropriate implementation in UI in Google Chrome on Windows prior to 149.0.7827.53 allowed a local attacker to perform privilege escalation via a malicious file. (Chromium security severity: High)
AnalysisAI
Local privilege escalation in Google Chrome on Windows prior to 149.0.7827.53 enables an attacker who can deliver a malicious file to a victim to elevate privileges via an inappropriate UI implementation. Google's Chromium team rated the severity as High and a stable channel patch has been released, but no public exploit has been identified at time of analysis and the issue is not currently listed in CISA KEV.
Technical ContextAI
The flaw resides in Chrome's UI subsystem on the Windows platform and is classified under CWE-20 (Improper Input Validation), indicating that the browser's user-interface code accepts or processes file-related input without adequately validating it before performing a security-sensitive action. Because the affected component is the user-facing UI layer rather than the renderer sandbox or V8 engine, the weakness likely involves how Chrome handles file paths, file types, or shell interactions when the user interacts with a crafted file - a class of bug that has historically allowed attackers to abuse default file handlers, drag-and-drop, or download dialogs on Windows. The CPE is not provided in the input, but the EUVD record narrows the affected scope to Chrome builds prior to 149.0.7827.53 on Windows.
RemediationAI
Vendor-released patch: Google Chrome 149.0.7827.53 for Windows - upgrade all Windows endpoints to this stable build or later via the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html, restarting the browser to apply the update. Enterprise administrators should push the update through Google Update / Chrome Browser Cloud Management or their endpoint management tooling and verify versions via chrome://settings/help. Until the patched build is deployed, compensating controls include restricting users from opening untrusted downloaded files (e.g., enforcing SmartScreen and Mark-of-the-Web prompts, blocking executable downloads at the proxy, and disallowing risky file extensions via AppLocker/WDAC) - note these controls reduce but do not eliminate exposure because the vulnerability is reached through normal file-handling UI flows and may degrade legitimate user workflows.
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player
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Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
Same weakness CWE-20 – Improper Input Validation
View allSame technique Privilege Escalation
View allVendor StatusVendor
SUSE
Severity: High| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-34391
GHSA-fjjw-c73h-35f8