CVE-2026-113100 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Audio in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified involves a critical memory corruption flaw within the audio processing subsystem of Google Chrome, specifically affecting versions prior to 156.0.8078.47. This defect represents a significant breach in the browser's internal data handling mechanisms, where improper validation or bounds checking during the manipulation of audio buffers allows for unauthorized access and modification of memory regions that should be protected by the sandbox environment. The root cause typically stems from issues such as use-after-free conditions, buffer overflows, or type confusion errors within the code responsible for decoding, mixing, or rendering audio data streams. When a user visits a maliciously crafted HTML page containing specially constructed media elements or JavaScript-driven audio APIs, the browser's engine processes these inputs without adequately verifying their integrity or size constraints relative to allocated memory blocks.
From an operational perspective, this vulnerability enables a remote attacker to achieve arbitrary code execution within the context of the Chrome sandbox. While modern browsers employ robust sandboxing techniques designed to isolate renderer processes from the operating system and user data, successful exploitation of this specific flaw allows the attacker to bypass these containment measures. By corrupting memory structures such as function pointers or object headers, an attacker can redirect program flow to execute malicious payloads. This effectively neutralizes the security boundary that protects the host system, potentially leading to full compromise of the victim's machine if subsequent privilege escalation techniques are employed. The severity is classified as medium by Chromium standards because while it allows code execution, the complexity of exploitation and the presence of mitigations like DEP and ASLR may limit its immediate exploitability in all scenarios, though the risk remains substantial for targeted attacks or when combined with other vulnerabilities.
This incident aligns closely with Common Weakness Enumeration categories such as CWE-120 Buffer Copy without Checking Size of Input Classic Buffer Overflow and CWE-416 Use After Free, which are prevalent in complex multimedia processing libraries where dynamic memory allocation is frequent. Furthermore, the exploitation path corresponds to MITRE ATT&CK techniques related to Initial Access via Spearphishing Link or Drive-by Compromise, specifically leveraging browser vulnerabilities for code execution. The attack vector relies on social engineering or malicious web content delivery systems that host the crafted HTML page, tricking users into loading it within an affected version of Chrome.
To mitigate this risk, organizations and individual users must ensure that Google Chrome is updated to version 156.0.8078.47 or later immediately upon availability. Automatic update settings should be verified as enabled to prevent exposure during the window between vulnerability disclosure and patch deployment. For enterprise environments, deploying endpoint detection and response solutions with behavioral analysis capabilities can help identify anomalous memory access patterns indicative of exploitation attempts. Additionally, restricting user privileges where possible and employing application whitelisting can reduce the impact if a sandbox escape is successfully achieved. Regular security audits of browser configurations and strict control over third-party extensions that interact with audio APIs further harden the environment against such exploits.