CVE-2026-106417 in Chrome
Summary
by MITRE • 10/07/2026
Integer overflow in Media in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified as an integer overflow within the media processing subsystem of Google Chrome prior to version 155.0.8059.39 represents a critical memory safety flaw that undermines the browser's sandboxing architecture. Integer overflows occur when an arithmetic operation results in a value that exceeds the maximum capacity for a given data type, causing it to wrap around to a negative number or a significantly smaller positive integer. In this specific instance, the media component likely failed to properly validate input sizes during memory allocation or buffer manipulation operations. When a crafted HTML page triggers these calculations with maliciously constructed values, the resulting miscalculation leads to an incorrect amount of memory being allocated or accessed. This discrepancy creates a scenario where subsequent write operations can exceed the bounds of the intended buffer, leading to heap corruption and potentially allowing for arbitrary code execution within the context of the browser process.
From a technical perspective, this flaw aligns with CWE-190, which defines integer overflow or wraparound as a common source of vulnerabilities in C and C++ based applications like Chrome's underlying Chromium engine. The severity is classified as low by Chromium security standards because while it allows for potential code execution outside the sandbox, successful exploitation typically requires specific conditions that may be mitigated by other browser defenses such as DEP (Data Execution Prevention) or ASLR (Address Space Layout Randomization). However, the core issue remains severe due to its impact on isolation boundaries. The attacker crafts an HTML page containing malicious media elements or scripts designed to trigger the overflow during decoding or rendering processes. By manipulating metadata or stream data within these media files, the attacker forces the browser into a state where memory management routines miscalculate buffer sizes, leading to out-of-bounds writes that can overwrite adjacent heap structures and ultimately hijack control flow.
The operational impact of this vulnerability is significant for users who visit compromised websites or view maliciously crafted content embedded in legitimate sites. Although the sandboxing mechanism provides multiple layers of defense, a successful exploit could allow an attacker to escape the restricted environment assigned to web pages and execute code with higher privileges within the browser process. This can lead to data exfiltration, installation of malware, or further lateral movement if combined with other vulnerabilities. The risk is heightened because media processing often involves complex parsing logic that handles untrusted input from various sources, making it a frequent target for exploitation attempts aimed at bypassing security boundaries.
To mitigate this vulnerability, users must update Google Chrome to version 155.0.8059.39 or later immediately upon availability. This patch includes corrections to the integer validation logic within the media subsystem, ensuring that arithmetic operations are checked against maximum limits before memory allocation occurs. Additionally, organizations should enforce strict content security policies and utilize browser hardening techniques such as disabling unnecessary plugins or restricting autoplay features for untrusted domains. Monitoring network traffic for unusual requests related to media streaming can also provide early indicators of exploitation attempts. Regular patch management is essential to maintain the integrity of the sandboxing model and prevent attackers from leveraging memory corruption flaws like this integer overflow to compromise system security.