CVE-2026-17668 in Chrome
Summary
by MITRE • 07/30/2026
Uninitialized Use in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 07/30/2026
The vulnerability in question represents an uninitialized memory access flaw within the ANGLE graphics library component of Google Chrome, specifically affecting versions prior to 151.0.7922.72. This issue falls under the category of improper initialization as classified by CWE-457, where variables or memory locations are accessed before being properly initialized with valid data values. The ANGLE library serves as a crucial component that translates OpenGL ES commands into DirectX commands on Windows platforms, enabling web applications to utilize hardware acceleration for graphics rendering through WebGL and other graphics APIs.
The technical execution of this vulnerability occurs when a remote attacker crafts a malicious HTML page that triggers specific conditions within the ANGLE implementation. When Chrome processes such a page, the uninitialized memory locations containing sensitive data from other origins are inadvertently accessed and subsequently leaked to the attacker's domain. This cross-origin data leakage represents a significant privacy and security concern as it allows attackers to potentially extract information from different web domains that should normally be isolated from each other. The flaw exploits the lack of proper validation and initialization checks within the graphics command processing pipeline, creating a pathway for information disclosure through memory corruption patterns.
The operational impact of this vulnerability extends beyond simple information leakage, as it can enable sophisticated attacks such as cross-site scripting exploitation, session hijacking, or even more advanced persistent threats. Attackers can leverage this vulnerability to gather sensitive user data, including cookies, authentication tokens, or other confidential information stored in memory by different web applications. The high severity classification by Chromium security team reflects the potential for significant damage when combined with other attack vectors, as demonstrated in various real-world exploitation scenarios where such uninitialized memory access flaws have been used as initial access points for more complex attack chains. This vulnerability directly impacts the core security model of web browsers by undermining the same-origin policy enforcement mechanisms that protect user privacy and data integrity.
Mitigation strategies for this vulnerability primarily focus on updating to the patched version of Google Chrome 151.0.7922.72 or later, which includes proper initialization checks and memory management improvements within the ANGLE component. Organizations should implement comprehensive patch management procedures to ensure timely deployment of security updates across all affected systems. Additional protective measures include enabling Content Security Policy headers, implementing strict browser security configurations, and monitoring for suspicious network activity that might indicate exploitation attempts. From a defense-in-depth perspective, this vulnerability aligns with ATT&CK technique T1557.001 for "Adversary-in-the-Middle" attacks, where attackers leverage memory corruption to extract sensitive information. The remediation process should also include regular security audits of graphics libraries and browser components, particularly focusing on memory safety practices and proper initialization protocols as recommended by industry standards such as those outlined in the OWASP Secure Coding Practices and NIST SP 800-160 guidelines for secure software development lifecycle implementation.