Improper neutralization of HTTP request headers for scripting syntax vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to obtain sensitive information via a specially crafted web page.

Improper neutralization of HTTP request headers for scripting syntax vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to obtain sensitive information via a specially crafted web page.

Multiple routers provided by Yamaha Corporation contain multiple vulnerabilities listed below. * Cross-site script inclusion (CWE-829) - CVE-2021-20843 * Improper neutralization of HTTP request headers for scripting syntax (CWE-644) - CVE-2021-20844 Shoji Baba of IERAE SECURITY INC. reported these vulnerabilities to JPCERT/CC. JPCERT/CC coordinated with the developer.