Heap Buffer Overflow in Google Chrome on Windows

CVE-2025-3619

What is CVE-2025-3619?

CVE-2025-3619 is a critical vulnerability identified in Google Chrome for Windows, specifically affecting the Codecs component. This issue relates to a heap buffer overflow that could enable remote attackers to exploit heap corruption through the use of specially crafted HTML pages. Given that Google Chrome is one of the most widely used web browsers globally, the presence of such a vulnerability poses a significant risk to users and organizations reliant on Chrome for secure web access and general productivity. Exploiting this vulnerability could lead to severe consequences for data integrity and confidentiality, impacting both individual and organizational operations.

Technical Details

The vulnerability manifests as a heap buffer overflow within the Codecs component of Google Chrome prior to version 135.0.7049.95. Heap buffer overflows occur when a program writes more data to a buffer than it was allocated in the heap memory, which can corrupt adjacent memory and potentially enable attackers to execute arbitrary code or crash the affected application. This susceptibility arises from improper handling of certain types of data input, creating a pathway for exploitation.

Potential impact of CVE-2025-3619

1. Remote Code Execution: The most critical risk associated with CVE-2025-3619 is the potential for remote code execution, allowing attackers to run malicious code on victims' machines. This capability could lead to unauthorized data access and manipulation, escalation of privileges, and comprehensive system compromise.

2. Data Breaches: Exploiting this vulnerability may facilitate unauthorized access to sensitive information stored on affected systems. Confidential data, including personal and financial details, could be exposed, leading to significant privacy violations and regulatory repercussions for organizations.

3. Increased Attack Surface for Further Exploitation: The successful exploitation of CVE-2025-3619 could serve as an entry point for additional attacks, enabling threat actors to install malware, exfiltrate data, or move laterally within a network. This could ultimately result in a broader security breach impacting multiple systems and users within an organization.

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