CVE-2021-23037: 
F5 BIG-IP Advanced Firewall Manager vulnerability analysis and mitigation

A reflected cross-site scripting (XSS) vulnerability (CVE-2021-23037) was identified in the BIG-IP Configuration utility. This vulnerability affects all versions of F5's BIG-IP software including 16.1.x, 16.0.x, 15.1.x, 14.1.x, 13.1.x, 12.1.x, and 11.6.x. The vulnerability allows attackers to execute JavaScript code in the context of the currently logged-in user through an undisclosed page of the configuration utility (CVE Mitre, Hacker News).

The vulnerability has been assigned a CVSS score of 7.5, indicating a high-severity security issue. The vulnerability specifically manifests as a reflected cross-site scripting (XSS) vulnerability in the BIG-IP Configuration utility, allowing JavaScript execution in the context of logged-in users (Hacker News).

When successfully exploited, this vulnerability allows attackers to execute JavaScript code in the context of the currently logged-in user of the BIG-IP Configuration utility. This could potentially lead to unauthorized access to sensitive information, session hijacking, or other malicious actions performed with the privileges of the authenticated user (CVE Mitre).

F5 has released security patches to address this vulnerability along with several other security issues. Users and administrators are strongly advised to install updated software versions as soon as possible. The vulnerability affects multiple versions of the BIG-IP software, and updating to the latest patched version is the recommended mitigation strategy (Hacker News).