CVE-2021-22357: Huawei s12700 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 Huawei products. A module cannot deal with specific messages due to validating inputs insufficiently. Attackers can exploit this vulnerability by sending specific messages to affected module. This can cause denial of service. Affected product versions include: S12700 V200R013C00SPC500, V200R019C00SPC500; S5700 V200R013C00SPC500, V200R019C00SPC500; S6700 V200R013C00SPC500, V200R019C00SPC500; S7700 V200R013C00SPC500, V200R019C00SPC500.

Affected products

• Huawei s12700 Firmware: version v200r013c00spc500 only; version v200r019c00spc500 only
• Huawei s5700 Firmware: version v200r013c00spc500 only; version v200r019c00spc500 only
• Huawei s6700 Firmware: version v200r013c00spc500 only; version v200r019c00spc500 only
• Huawei s7700 Firmware: version v200r013c00spc500 only; version v200r019c00spc500 only

Published 2021-08-23. Last modified 2026-06-17.