Provide references for CVE-2021-46387.
Where can I find more information about CVE-2021-46387?
References are available at: https://www.zyxel.com/us/en/support/security_advisories.shtml, https://www.zyxel.com/uk/en/products_services/zywall_2_plus.shtml, https://drive.google.com/drive/folders/1_XfWBLqxT2Mqt7uB663Sjlc62pE8-rcN?usp=sharing, http://packetstormsecurity.com/files/166189/Zyxel-ZyWALL-2-Plus-Cross-Site-Scripting.html.