CVE-2021-22359: Huawei s5700 Firmware

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

There is a denial of service vulnerability in the verisions V200R005C00SPC500 of S5700 and V200R005C00SPC500 of S6700. An attacker could exploit this vulnerability by sending specific message to a targeted device. Due to insufficient input validation, successful exploit can cause the service abnormal.

Affected products

• Huawei s5700 Firmware: version v200r005c00spc500 only
• Huawei s6700 Firmware: version v200r005c00spc500 only

Published 2021-05-27. Last modified 2026-06-17.