CVE-2024-6773 in Chrome
Summary
by MITRE • 07/17/2024
Inappropriate implementation in V8 in Google Chrome prior to 126.0.6478.182 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 11/25/2025
The vulnerability identified as CVE-2024-6773 represents a critical heap corruption issue within the V8 JavaScript engine that powers Google Chrome and Chromium-based browsers. This flaw exists in versions prior to 126.0.6478.182 and demonstrates a significant security weakness in the browser's handling of memory management during JavaScript execution. The vulnerability stems from an improper implementation that fails to adequately validate or sanitize memory operations when processing crafted HTML content, creating a pathway for remote attackers to manipulate heap memory structures.
The technical nature of this vulnerability falls under the category of heap corruption, which occurs when an application writes data to memory locations outside of the intended heap allocation boundaries. This type of flaw typically arises from insufficient bounds checking or improper memory management practices within the JavaScript engine's interpretation and execution of code. In the context of V8, this issue manifests when processing maliciously crafted HTML pages that contain specific JavaScript constructs or DOM manipulations designed to trigger the vulnerable code path. The flaw enables attackers to potentially overwrite adjacent memory locations, corrupt heap metadata, or even inject arbitrary code into the browser's memory space.
From an operational perspective, this vulnerability presents a high-severity risk to users of affected Chrome versions as it can be exploited remotely through web-based attacks without requiring any user interaction beyond visiting a malicious website. The attack surface is particularly concerning given that V8 is responsible for executing JavaScript code across billions of web pages daily, making this a prime target for cybercriminals seeking to compromise user systems. Successful exploitation could lead to complete browser compromise, allowing attackers to execute arbitrary code with the privileges of the browser process, potentially resulting in data theft, system takeover, or further lateral movement within compromised networks.
The security implications extend beyond simple exploitation as this vulnerability aligns with several ATT&CK techniques including T1059.007 for JavaScript execution and T1068 for local privilege escalation. The underlying CWE classification for this type of issue would fall under CWE-121, which describes heap-based buffer overflow conditions, or potentially CWE-122 for heap-based buffer overflow with a large buffer. Organizations should prioritize immediate patching of affected systems to prevent exploitation, as the vulnerability's remote nature means that users could be compromised simply by visiting malicious websites. Additional mitigations include implementing strict content security policies, enabling sandboxing features, and deploying web application firewalls to detect and block malicious traffic patterns associated with known exploitation techniques.