CVE-2025-13022 is a critical security vulnerability identified in the Graphics: WebGPU component of Mozilla Firefox and Thunderbird, affecting versions prior to 145. The root cause is incorrect boundary conditions, a classic example of CWE-703, which can lead to out-of-bounds memory access. This flaw enables remote attackers to execute arbitrary code on the victim's machine without requiring any privileges or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The vulnerability impacts confidentiality, integrity, and availability, allowing attackers to potentially take full control of affected systems. WebGPU is a modern graphics API designed to provide high-performance GPU access for web applications, making this vulnerability particularly dangerous as it can be triggered via crafted web content. Although no known exploits are currently reported in the wild, the critical severity and ease of exploitation necessitate urgent attention. The lack of specified affected versions suggests all Firefox and Thunderbird versions below 145 are vulnerable. This vulnerability underscores the importance of secure boundary checking in complex graphics processing components within widely used software.

For European organizations, this vulnerability poses a significant risk due to the widespread use of Firefox and Thunderbird in both private and public sectors. Successful exploitation could lead to full system compromise, data breaches, and disruption of critical services. Sectors such as government, finance, healthcare, and critical infrastructure are particularly vulnerable given their reliance on secure communications and web browsing. The ability to exploit this vulnerability remotely without authentication or user interaction increases the attack surface dramatically. Additionally, the compromise of endpoints can facilitate lateral movement within networks, leading to broader organizational impact. The absence of known exploits currently provides a window for proactive mitigation, but the critical nature demands immediate action to prevent potential future attacks.

1. Monitor Mozilla's official channels closely and apply security updates for Firefox and Thunderbird as soon as version 145 or later is released with the patch. 2. Until patches are available, consider disabling or restricting WebGPU functionality via browser configuration or group policy to reduce attack surface. 3. Employ network-level protections such as web filtering and intrusion detection systems to block or alert on suspicious WebGPU-related traffic or exploit attempts. 4. Implement endpoint detection and response (EDR) solutions capable of identifying anomalous behavior related to graphics processing or memory exploitation. 5. Educate users about the risks of visiting untrusted websites, although user interaction is not required for exploitation, reducing exposure to malicious content is beneficial. 6. Conduct internal audits to identify critical systems using affected Firefox or Thunderbird versions and prioritize their remediation. 7. Consider deploying application sandboxing or isolation techniques to limit the impact of potential exploitation.