CVE-2026-79033 in Chrome
Summary
by MITRE • 08/26/2026
Insufficient control flow management in DevTools in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 08/26/2026
The vulnerability identified as an insufficient control flow management issue within Google Chrome's DevTools component represents a significant risk vector for browser-based attacks, particularly when combined with social engineering tactics. This flaw exists in versions of Chromium prior to 152.0.7977.65 and stems from improper handling of execution paths during the processing of crafted HTML content. While DevTools is primarily intended as a debugging interface for developers, its integration into the main browser process means that vulnerabilities within this module can potentially be leveraged by attackers who have managed to trick users into visiting malicious web pages or opening specially constructed documents. The core technical deficiency lies in how the application manages state transitions and function calls during the parsing and execution of complex HTML structures, allowing an attacker to manipulate the control flow in ways that bypass intended security boundaries.
From a technical perspective, this vulnerability is classified under CWE-841, which pertains to Improper Enforcement of Behavioral Workflow. The flaw allows for a scenario where the browser's internal state machine enters an unexpected or invalid configuration due to malformed input data embedded within HTML elements. When a user interacts with such content, either through direct navigation or via scripts triggered by social engineering cues like deceptive links or prompts, the application fails to validate the sequence of operations correctly. This lack of rigorous validation enables the execution of arbitrary code that would otherwise be restricted by the browser's sandboxing mechanisms. The severity is rated as Medium because while it requires user interaction and specific crafted content, its ability to escape the sandbox environment elevates it from a mere information disclosure or denial-of-service issue to one capable of full system compromise if other mitigating controls are absent.
The operational impact of this vulnerability is severe for end-users who rely on Chrome for sensitive activities such as online banking, corporate communications, or accessing proprietary data. An attacker leveraging social engineering could craft an HTML page that exploits the control flow error to execute arbitrary commands within the browser's sandboxed environment. Although modern browsers employ multiple layers of defense including memory corruption mitigations and strict origin policies, escaping the sandbox allows the malicious code to interact more freely with local system resources. This can lead to data exfiltration, installation of persistent malware, or use of the compromised machine as a pivot point for further network attacks. The reliance on social engineering indicates that this vulnerability is often part of a broader attack chain where technical exploitation is preceded by psychological manipulation to lower user defenses and encourage interaction with malicious content.
In terms of industry standards mapping, this incident aligns with MITRE ATT&CK technique T1059, Command and Scripting Interpreter, specifically when used in the context of browser-based execution environments like JavaScript or embedded scripts within HTML. The exploitation method also reflects aspects of CWE-20, Improper Input Validation, as the root cause is the failure to adequately sanitize or validate complex input structures before processing them through critical control flow logic. Security teams should recognize that vulnerabilities in developer tools are not isolated issues but represent potential backdoors into the core browser functionality due to their elevated privileges relative to standard web content execution contexts.
To mitigate this risk, organizations must ensure that all instances of Google Chrome and Chromium-based browsers are updated to version 152.0.7977.65 or later immediately upon availability. Patch management processes should prioritize security updates for browser components due to their high exposure surface area. Additionally, implementing application whitelisting can help prevent the execution of unauthorized scripts even if a vulnerability is exploited. User awareness training remains critical in this context; since social engineering is a prerequisite for successful exploitation, educating employees on recognizing suspicious links and untrusted HTML content significantly reduces the attack success rate. Security monitoring tools should also be configured to detect anomalous browser behavior indicative of sandbox escape attempts or unusual network connections originating from browser processes following visits to external websites.