CVE-2026-95331 in Chrome
Summary
by MITRE • 09/29/2026
Out of bounds write in ANGLE in Google Chrome prior to 154.0.8037.57 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 09/29/2026
The vulnerability identified as an out-of-bounds write within the ANGLE graphics library in Google Chrome prior to version 154.0.8037.57 represents a critical memory corruption flaw that undermines the browser's sandboxing mechanisms. ANGLE, which stands for Almost Native Graphics Layer Engine, serves as a translation layer between web applications and native GPU drivers, converting OpenGL ES calls into DirectX or Metal APIs depending on the host operating system. This component is integral to rendering complex graphical content such as WebGL scenes and CSS animations efficiently. When an out-of-bounds write occurs within this subsystem, it indicates that the application has written data beyond the allocated memory buffer boundaries. In the context of a browser engine, where multiple processes run with restricted privileges, such a flaw can allow a remote attacker to corrupt adjacent memory structures or overwrite critical control flow data.
The operational impact of this vulnerability is severe because it potentially allows for arbitrary code execution outside the security sandbox. Modern browsers rely heavily on process isolation and sandboxing to contain damage from exploited vulnerabilities. By crafting a malicious HTML page that triggers specific rendering conditions within ANGLE, an attacker can manipulate memory in ways that bypass these protections. This could lead to the execution of shellcode or other payloads with higher privileges than those granted to the browser tab, effectively breaking out of the confined environment. The Chromium security team has classified this issue as medium severity, reflecting its potential for exploitation but also acknowledging the mitigating factors present in Chrome's defense-in-depth architecture, such as heap hardening and stack canaries, which may complicate reliable exploitation despite the underlying flaw being serious.
From a classification perspective, this vulnerability aligns with CWE-787: Out-of-bounds Write, which describes writing data to a memory location beyond the intended boundary of a buffer. This type of error is particularly dangerous because it does not necessarily cause an immediate crash but instead creates unstable program state that can be leveraged for further attacks. In terms of adversary tactics, this scenario maps closely to MITRE ATT&CK technique T1203: Exploitation for Client Execution, where attackers use malicious content delivered via web pages to execute code on the victim's system. The attack vector involves social engineering or drive-by download scenarios where a user visits a compromised website containing the crafted HTML page that exploits the ANGLE rendering engine flaw.
Mitigation strategies primarily involve updating Google Chrome to version 154.0.8037.57 or later, which includes patches for this specific memory corruption issue within the graphics layer. Organizations should ensure automated update policies are in place to minimize exposure windows. Additionally, users can reduce risk by disabling WebGL if it is not required for their workflow, although this impacts functionality of many modern web applications. Security teams should also monitor for indicators of compromise related to unusual process behavior or network connections originating from browser processes, as these may signal attempted exploitation attempts against unpatched systems. Regular auditing of third-party plugins and extensions that interact with graphics APIs can further reduce the attack surface associated with such rendering engine vulnerabilities.