Huawei NIP6800 versions V500R001C30, V500R001C60SPC500, and V500R005C00; and Secospace USG6600 and USG9500 versions V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, and V500R005C00 have an input validation vulnerability where the IPSec module does not validate a field in a specific message. Attackers can send specific message to cause out-of-bound read, compromising normal service.