CVE-2020-16021: 
Google Chrome vulnerability analysis and mitigation

A race condition vulnerability (CVE-2020-16021) was discovered in the image burner component of Google Chrome on ChromeOS versions prior to 87.0.4280.66. The vulnerability was reported on October 16, 2020, and was addressed in the Chrome 87 stable channel update released in November 2020 (Chrome Release).

The vulnerability is classified as a race condition (CWE-362) in the ImageBurner component of ChromeOS. It received a CVSS v3.1 base score of 7.5 (High), with the vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network-based attack vector with high attack complexity, no privileges required, and user interaction required (NVD).

If successfully exploited, this vulnerability could allow a remote attacker who had already compromised the browser process to perform OS-level privilege escalation through a malicious file. This represents a significant security risk as it could enable attackers to gain elevated system privileges (NVD).

The vulnerability requires the attacker to first compromise the browser process and then exploit the race condition in the image burner component. The attack complexity is rated as high, and user interaction is required for successful exploitation (NVD).

The vulnerability was patched in Chrome version 87.0.4280.66 for ChromeOS. Users should ensure their Chrome browser and ChromeOS are updated to this version or later to mitigate the risk (Chrome Release).