CVE-2026-113032 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Omnibox in Google Chrome on on Android 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 as CVE-2023-6973 represents a critical memory corruption flaw within the Omnibox component of Google Chrome for Android, specifically affecting versions prior to 156.0.8078.47. The Omnibox serves as the unified address and search bar in the browser interface, handling user input for navigation queries and autocomplete suggestions. This particular defect arises from improper memory management practices during the processing of crafted HTML content or complex query inputs processed by this component. When a remote attacker constructs a malicious webpage designed to exploit this flaw, they can trigger an out-of-bounds write or use-after-free condition within the browser's sandboxed environment. The severity is classified as Medium by Chromium security standards because while it allows for arbitrary code execution, the presence of modern browser mitigations such as site isolation and memory protection mechanisms may limit the ease with which a successful exploit leads to full system compromise in all scenarios.
From a technical perspective, this vulnerability falls under the category of CWE-120 Buffer Copy without Checking Size of Input or CWE-416 Use After Free, depending on the specific internal mechanics observed during exploitation attempts. The flaw likely stems from insufficient validation of input lengths or improper handling of memory pointers when rendering autocomplete data or processing search queries embedded within malicious HTML structures. By crafting a webpage that triggers these edge cases in the Omnibox logic, an attacker can corrupt adjacent memory regions or manipulate function return addresses. This corruption allows for the execution of arbitrary code with the privileges of the browser process. Although Chrome employs sandboxing to restrict the impact of such exploits, bypassing these protections remains possible through sophisticated exploitation techniques that chain this initial vulnerability with other primitives to escape the sandbox and gain higher-level access on the Android device.
The operational impact of this vulnerability is significant for users who browse untrusted or potentially malicious websites. A successful exploit could allow an attacker to install malware, steal sensitive data such as cookies and session tokens stored in browser memory, or establish a persistent foothold within the user's environment. The attack vector is classified as remote via network (ATT&CK T1189 Drive-by Compromise), meaning no physical access or prior authentication on the target device is required. An attacker simply needs to lure a victim into visiting a specially crafted webpage while using an affected version of Chrome for Android. Given that mobile browsers are frequently used in contexts where users may be less vigilant about URL inspection, this vector presents a substantial risk profile. The ability to execute code inside the sandbox also implies potential lateral movement if other browser processes or applications share memory space or rely on similar security assumptions.
Mitigation strategies primarily involve immediate software updates. Users must upgrade Google Chrome for Android to version 156.0.8078.47 or later, where these memory management issues have been addressed through rigorous code reviews and fuzzing efforts by the Chromium team. In environments where automatic updates are not feasible, administrators should enforce strict content security policies and consider deploying mobile device management solutions that restrict browser capabilities or block access to high-risk domains until patches can be applied. Additionally, enabling safe browsing features within Chrome provides an additional layer of defense by warning users about known malicious sites before they load potentially exploitable content. Security teams should monitor for indicators of compromise related to memory corruption exploits and ensure that endpoint detection systems are configured to detect anomalous behavior consistent with browser-based code execution attempts.