CVE-2026-17707 in Chrome
Summary
by MITRE • 07/30/2026
Uninitialized Use in Media in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents an uninitialized memory access issue within Google Chrome's media handling components on Windows systems prior to version 151.0.7922.72. The flaw falls under the category of CWE-457 Undefined Behavior for Non-Static Variables, where variables are used without proper initialization, potentially exposing sensitive data from process memory. The vulnerability specifically affects the renderer process within Chrome's architecture, making it particularly dangerous as it requires only compromise of this single process to exploit.
The technical implementation involves a crafted HTML page that triggers improper handling of media elements within Chrome's rendering engine. When the browser processes such malicious content, uninitialized variables in the media processing code are accessed, leading to information disclosure from adjacent memory locations. This type of vulnerability is classified as a high severity issue by Chromium security standards due to its potential for data leakage and the relatively low barrier to exploitation once an attacker has achieved renderer process compromise.
Operationally, this vulnerability creates a significant risk for users as it allows remote attackers to extract potentially sensitive information from memory addresses that were not properly initialized. The impact extends beyond simple information disclosure since the leaked memory content could contain session tokens, user data, cryptographic keys, or other confidential information depending on what was stored in the uninitialized memory regions. Attackers leveraging this vulnerability would typically need to first compromise the renderer process through a separate attack vector such as a sandbox escape or other initial compromise technique.
The exploitation pathway demonstrates how seemingly isolated vulnerabilities can create dangerous escalation opportunities within browser security models. This particular flaw aligns with ATT&CK technique T1059.001 Command and Scripting Interpreter: PowerShell, where attackers might craft malicious content to trigger such memory access patterns, though the specific exploitation would occur through HTML rather than scripting. Organizations should consider this vulnerability as part of broader browser hardening strategies, particularly given that it affects a core component like media processing which is frequently utilized across web applications. The recommended mitigation involves immediate patching to version 151.0.7922.72 or later, along with maintaining comprehensive monitoring for unusual memory access patterns in browser processes and implementing additional sandboxing measures to limit the impact of potential compromises.