CVE-2026-79247 in Chrome
Summary
by MITRE • 08/26/2026
Use after free in Chromoting in Google Chrome on on Windows prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 08/26/2026
The vulnerability identified as CVE-2024-6813 represents a critical memory safety flaw within the Chromoting component of Google Chrome, specifically affecting versions prior to 152.0.7977.65 on Windows operating systems. This issue is classified as an out-of-bounds write or use-after-free condition, which falls under the Common Weakness Enumeration category CWE-416. In software engineering, a use-after-free error occurs when a program continues to use a pointer after the memory it points to has been freed and potentially reallocated for another purpose. This type of vulnerability is particularly dangerous because it can lead to undefined behavior, including application crashes or, more critically, arbitrary code execution if an attacker can control the data written into the reused memory location.
The Chromoting component facilitates remote desktop sharing features within Chrome, allowing users to connect to and control other devices remotely. Because this functionality involves handling network traffic and managing complex state transitions between local and remote processes, it presents a significant attack surface. The specific flaw allows an attacker who has already compromised the renderer process sandbox to exploit this memory corruption issue. In modern browser architectures like Chromium, the renderer process is isolated in a sandbox with restricted permissions to prevent malicious web content from directly accessing sensitive system resources or executing code outside its confined environment. However, by leveraging the use-after-free vulnerability within Chromoting, an attacker can bypass these security boundaries.
The operational impact of this vulnerability is severe due to its potential for remote code execution. An attacker does not need direct physical access or user interaction beyond initiating a connection through crafted network traffic. By sending specially constructed packets designed to trigger the memory corruption at the precise moment when freed memory is accessed, the attacker can overwrite function pointers or object vtables. This manipulation allows the injection and subsequent execution of arbitrary code with the privileges of the Chrome process. Since Chromoting often runs with higher privileges than standard renderer processes to facilitate screen sharing and input control, successful exploitation could grant an attacker significant control over the victim's system, potentially leading to data exfiltration, installation of persistent malware, or further lateral movement within a networked environment.
From a threat intelligence perspective, this vulnerability aligns with MITRE ATT&CK techniques related to privilege escalation and sandbox escape. Specifically, it relates to T1055 Process Injection and T1218 System Binary Proxy Execution if the attacker uses the compromised process to load malicious modules or execute additional payloads. The ability to move from a low-privilege renderer context to an arbitrary code execution state outside the sandbox represents a classic escalation path that attackers frequently target in browser-based exploits. The severity rating of High by Chromium security reflects the ease with which this flaw can be triggered via network traffic and its significant impact on system integrity.
Mitigation for this vulnerability requires immediate action from end-users and administrators. The primary remediation strategy is to update Google Chrome to version 152.0.7977.65 or later, where the memory management logic in Chromoting has been corrected to prevent access to freed memory regions. Organizations should enforce automated patching policies to ensure that all endpoints running Windows are updated promptly upon release of security patches. Additionally, while waiting for updates, administrators can consider disabling remote desktop features if they are not actively used, thereby reducing the attack surface associated with the Chromoting component. Implementing strict network segmentation and monitoring for anomalous outbound connections from Chrome processes can also help detect potential exploitation attempts in real-time, although prevention through patching remains the most effective defense against this class of memory corruption vulnerabilities.