CVE-2026-113038 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in DevTools in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified as CVE-2024-9383 represents a critical flaw within the DevTools component of Google Chrome, specifically affecting versions prior to 156.0.8078.47. This issue stems from improper memory management practices that result in a type confusion error during the execution of JavaScript code associated with browser developer tools. The root cause lies in how the V8 engine handles object types and references within the DevTools interface, allowing an attacker to manipulate internal data structures such that they are interpreted incorrectly by the runtime environment. This misinterpretation leads to memory corruption, which disrupts the integrity of the sandboxed execution context where Chrome typically isolates web content from system resources.
From a technical perspective, this vulnerability is classified under CWE-122, Heap-based Buffer Overflow, and more specifically aligns with CWE-824, Access of Uninitialized Pointer in an Out-of-bounds Scenario, due to the nature of type confusion leading to out-of-bounds memory access. The attack vector involves a remote attacker crafting a malicious HTML page that exploits this flaw when loaded within Chrome's DevTools environment or through interactions that trigger the vulnerable code paths during debugging sessions. Although the severity is rated as Low by Chromium security standards, the potential for information disclosure remains significant because it allows reading arbitrary memory locations inside the sandboxed process.
The operational impact of exploiting this vulnerability centers on unauthorized data exfiltration rather than remote code execution or privilege escalation. By leveraging the type confusion flaw, an attacker can read sensitive information stored in adjacent memory regions that should be inaccessible due to Chrome's security model. This could include session cookies, authentication tokens, private keys, or other confidential user data residing within the browser process memory space. While the sandbox architecture provides a robust defense against direct system compromise, successful exploitation of this vulnerability undermines the confidentiality guarantees provided by the isolation mechanisms, potentially leading to account takeover or further reconnaissance activities if combined with other techniques.
Mitigation strategies primarily involve immediate software updates to ensure that users are running Chrome version 156.0.8078.47 or later, where these memory management issues have been addressed through rigorous code reviews and fuzzing efforts. For organizations managing large deployments of Chromium-based browsers, enforcing automatic update policies is essential to minimize the window of exposure. Additionally, security teams should monitor for indicators of compromise related to DevTools abuse, such as unusual JavaScript execution patterns or attempts to access restricted memory regions via crafted scripts. Implementing strict content security policies and disabling unnecessary developer tool features in production environments can also reduce the attack surface available to potential adversaries seeking to exploit this specific flaw.
In terms of threat intelligence mapping, this vulnerability aligns with ATT&CK technique T1059.007, JavaScript, which describes how attackers use scripting languages within browsers to perform malicious actions. It also relates to T1005, Data from Local System, as the primary goal is often data staging and exfiltration rather than immediate system control. Understanding these mappings helps security operations centers prioritize detection rules that focus on anomalous browser behavior indicative of memory corruption exploits, particularly those involving DevTools interactions or unexpected JavaScript object manipulations within web pages.