CVE-2026-87648 in Chrome
Summary
by MITRE • 09/09/2026
Use after free in ANGLE in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process 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 • 09/09/2026
The vulnerability identified in Google Chrome, specifically within the ANGLE graphics library component on Windows systems prior to version 153.0.8010.36, represents a critical memory management flaw classified as an use-after-free error. This type of vulnerability arises when a program continues to use a pointer after it has been freed, leading to undefined behavior that can be exploited by malicious actors. In the context of Chromium-based browsers, ANGLE serves as a crucial translation layer between web applications and native graphics APIs such as OpenGL or Vulkan. The security severity is rated as Medium because while the flaw itself is significant, its exploitation requires specific preconditions related to process isolation within the browser architecture.
The operational impact of this vulnerability centers on the potential for arbitrary code execution outside the sandbox environment that typically protects user data from malicious web content. For an attacker to successfully exploit this use-after-free condition, they must first compromise the renderer process through a crafted HTML page or other web-based payload. Once inside the renderer, which is designed with strict security boundaries to limit access to system resources, the vulnerability allows for memory corruption that can bypass these sandbox restrictions. This escalation of privilege enables the execution of arbitrary code on the host operating system, effectively breaking out of the browser's protective container and gaining control over the underlying Windows environment.
From a technical perspective, this flaw aligns with CWE-416, which defines use-after-free as an error where a pointer is used after it has been freed or deallocated. The exploitation mechanism typically involves manipulating object lifecycles within the graphics pipeline to trigger the free operation while maintaining references that are subsequently dereferenced during rendering operations. This mismatch between memory allocation and deallocation timelines creates a window of opportunity for heap spraying techniques, where an attacker can control the contents of the freed memory region to redirect execution flow toward malicious shellcode. The complexity lies in achieving reliable exploitation within the constraints of modern browser security features such as ASLR and DEP, which make direct code injection more difficult but not impossible given sufficient precision in memory manipulation.
In terms of threat modeling and industry standards, this vulnerability maps directly to MITRE ATT&CK technique T1203, specifically the sub-technique for exploitation for client-side execution via web browsers. The attack vector involves delivering a malicious payload through standard web technologies like HTML, CSS, or JavaScript that triggers the vulnerable code path within ANGLE. This scenario highlights the persistent risk associated with complex software components embedded in widely used applications, where even minor memory safety issues can lead to severe security breaches due to the privileged nature of browser processes relative to typical user-level restrictions.
Mitigation strategies primarily involve updating Google Chrome and all Chromium-based browsers to version 153.0.8010.36 or later, which includes patches addressing the lifecycle management errors within ANGLE. Organizations should enforce automated update policies to ensure rapid deployment of security fixes across all endpoints. Additionally, implementing strict content security policies can help mitigate the initial compromise phase by restricting the execution of untrusted scripts and resources that might attempt to trigger such vulnerabilities. Security teams should also monitor for indicators of compromise related to renderer process anomalies or unexpected network connections originating from browser processes, as these may signal active exploitation attempts targeting this class of memory corruption flaws.