CVE-2016-8276: Huawei USG2100

Critical severity, CVSS 9.8. EPSS: 5.6% chance of exploitation in the next 30 days.

Buffer overflow in the Point-to-Point Protocol over Ethernet (PPPoE) module in Huawei USG2100, USG2200, USG5100, and USG5500 unified security gateways with software before V300R001C10SPC600, when CHAP authentication is configured on the server, allows remote attackers to cause a denial of service (server restart) or execute arbitrary code via crafted packets sent during authentication.

Affected products

• Huawei USG2100: version v300r001c00 only; version v300r001c10 only
• Huawei USG2200: version v300r001c00 only; version v300r001c10 only
• Huawei USG5100: version v300r001c00 only; version v300r001c10 only
• Huawei USG5500: version v300r001c00 only; version v300r001c10 only

Published 2016-10-03. Last modified 2026-06-17.