CVE-2026-16413
Summary
by MITRE • 07/22/2026
Out of bounds write in ANGLE in Google Chrome prior to 150.0.7871.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability represents a critical out-of-bounds write condition within ANGLE, the graphics library that Chrome uses for rendering graphics on Windows platforms through DirectX APIs. The flaw exists in the way ANGLE handles certain graphics operations when processing malicious HTML content, allowing an attacker who has already compromised the renderer process to potentially escape the sandbox protection mechanisms that normally isolate browser processes from the underlying operating system. The vulnerability is classified as high severity by Chromium security standards due to its potential for privilege escalation and system compromise.
The technical implementation of this flaw involves improper bounds checking within ANGLE's graphics command processing pipeline, where memory writes occur beyond allocated buffer boundaries during specific rendering operations. When a malicious HTML page triggers certain graphics rendering sequences, the vulnerable code fails to validate array indices or buffer limits before performing memory writes, creating opportunities for memory corruption that can be exploited to gain unauthorized access to system resources. This type of vulnerability falls under CWE-787: "Out-of-bounds Write" which is categorized as a fundamental memory safety issue in software development practices.
The operational impact of this vulnerability extends beyond simple rendering failures, as it provides a pathway for attackers who have already achieved initial compromise through other means to escalate their privileges and break out of the browser's security sandbox. Once an attacker gains control of the renderer process through techniques such as heap spraying or use-after-free exploits, they can leverage this out-of-bounds write to overwrite critical memory structures or function pointers that govern process behavior. This represents a significant threat vector in the context of the ATT&CK framework under T1059 and T1068 where adversaries seek to execute malicious code with elevated privileges.
Mitigation strategies for this vulnerability require immediate patching of Chrome installations to version 150.0.7871.182 or later, as this update includes the necessary bounds checking fixes and memory safety improvements in ANGLE's graphics processing routines. Organizations should also implement additional protective measures including browser hardening configurations, strict content security policies, and monitoring for suspicious rendering behavior that might indicate exploitation attempts. Network security teams should consider implementing web application firewalls and deep packet inspection to detect potentially malicious HTML content that could trigger this vulnerability, while system administrators should ensure regular patch management processes are in place to maintain up-to-date browser installations across all endpoints.
The broader implications of this vulnerability highlight the critical importance of graphics library security in modern browsers, as ANGLE serves as a crucial component for hardware acceleration and visual rendering. The complexity of graphics APIs combined with the need for performance optimization creates numerous opportunities for memory safety issues that can be exploited by sophisticated attackers. This vulnerability demonstrates how seemingly isolated graphics processing flaws can have cascading security implications when combined with other exploitation techniques, emphasizing the necessity of comprehensive security testing across all browser components including third-party libraries and system integration points.