Huawei NIP6800 versions V500R001C30, V500R001C60SPC500, and V500R005C00SPC100; and Secospace USG6600 and USG9500 versions V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, and V500R005C00SPC100 have an information leakage vulnerability. An attacker can exploit this vulnerability by sending specific request packets to affected devices. Successful exploit may lead to information leakage.