CVE-2026-19163 in Chrome
Summary
by MITRE • 08/07/2026
Use after free in Media in Google Chrome on Windows prior to 151.0.7922.109 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 • 08/07/2026
This vulnerability represents a critical use-after-free condition in Google Chrome's media handling component that existed in versions prior to 151.0.7922.109 on Windows systems. The flaw occurs within the browser's renderer process where improper memory management allows an attacker to manipulate freed memory locations, potentially enabling arbitrary code execution. The vulnerability is classified as high severity by Chromium security standards and specifically targets the Windows platform implementation of Chrome's media subsystem.
The technical exploitation involves a crafted HTML page that triggers a sequence of events leading to memory deallocation followed by subsequent access to the freed memory region. This type of vulnerability falls under CWE-416 which defines use-after-free conditions as a common class of memory safety issues where program code continues to reference memory after it has been freed by the system. The attacker must first compromise the renderer process through an initial exploit vector, then leverage this memory corruption flaw to execute malicious code with elevated privileges.
The operational impact of this vulnerability extends beyond typical browser exploitation scenarios as it specifically targets sandbox escape capabilities. When successfully exploited, the use-after-free condition allows a compromised renderer process to break out of Chrome's security sandbox and gain access to system-level operations. This represents a significant escalation from standard browser-based attacks to potential full system compromise, as the sandbox normally isolates renderer processes from the underlying operating system.
The vulnerability demonstrates how media processing components in modern browsers present complex attack surfaces due to their extensive use of multimedia libraries and hardware acceleration features. Media handling code often involves intricate memory management operations that can create opportunities for attackers to manipulate object lifecycles and memory layouts. The Windows-specific nature of this vulnerability suggests implementation differences in Chrome's media stack between operating systems, potentially related to DirectShow or other Windows media frameworks that handle audio and video processing.
Mitigation strategies should focus on immediate patching to the affected Chrome versions, as well as implementing additional security controls such as address space layout randomization and code integrity checks. Browser vendors and system administrators should consider deploying additional monitoring for unusual memory access patterns and anomalous behavior in renderer processes. The vulnerability underscores the importance of comprehensive memory safety testing for media processing components and highlights the need for continuous security assessments of browser sandbox implementations, particularly those that handle multimedia content from untrusted sources.
This type of vulnerability aligns with ATT&CK technique T1059.007 which covers script-based attacks, as attackers can leverage HTML pages containing malicious JavaScript or embedded multimedia content to trigger memory corruption. The attack chain typically involves initial compromise through social engineering or other delivery mechanisms followed by exploitation of the specific use-after-free condition in Chrome's media processing pipeline, ultimately leading to system-level privilege escalation and potential full system compromise.
The security implications of this vulnerability extend beyond immediate exploitation as it demonstrates persistent challenges in maintaining secure memory management practices within complex browser architectures. Modern browsers must balance performance requirements with security considerations, particularly when implementing multimedia features that require extensive interaction with system resources. This case illustrates why regular security updates and proactive vulnerability management are essential components of enterprise security strategies, especially for widely deployed software platforms like Google Chrome that serve as primary attack vectors for sophisticated adversaries.