Certain NETGEAR devices are affected by stored XSS. This affects D6100 before 1.0.0.58, D7800 before 1.0.1.34, JNR1010v2 before 1.1.0.50, JWNR2010v5 before 1.1.0.50, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, R6020 before 1.0.0.30, R6080 before 1.0.0.30, R6100 before 1.0.1.16, R6120 before 1.0.0.40, R6700v2 before 1.2.0.14, R6800 before 1.2.0.14, R6900v2 before 1.2.0.14, R7500v2 before 1.0.3.26, R7800 before 1.0.2.46, R9000 before 1.0.4.2, WN3000RPv2 before 1.0.0.52, WN3000RPv3 before 1.0.2.78, WNDR3700v4 before 1.0.2.102, WNDR3700v5 before 1.1.0.54, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.48, WNDR4500v3 before 1.0.0.48, WNR1000v4 before 1.1.0.50, WNR2000v5 before 1.0.0.64, WNR2020 before 1.1.0.50, and WNR2050 before 1.1.0.50. NOTE: this may be a result of an incomplete fix for CVE-2017-18866.

The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter when invoking the URL /apply.cgi?/lang_check.html. This buffer overflow can be exploited by an unauthenticated attacker to achieve remote code execution.