CVE-2021-22356: Huawei Ips Module Firmware

Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days.

There is a weak secure algorithm vulnerability in Huawei products. A weak secure algorithm is used in a module. Attackers can exploit this vulnerability by capturing and analyzing the messages between devices to obtain information. This can lead to information leak.Affected product versions include: IPS Module V500R005C00SPC100, V500R005C00SPC200; NGFW Module V500R005C00SPC100, V500R005C00SPC200; Secospace USG6300 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200; Secospace USG6500 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200; Secospace USG6600 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200; USG9500 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200.

Affected products

• Huawei Ips Module Firmware: version v500r005c00spc100 only; version v500r005c00spc200 only
• Huawei Ngfw Module Firmware: version v500r005c00spc100 only; version v500r005c00spc200 only
• Huawei Secospace USG6300 Firmware: version v500r001c30spc200 only; version v500r001c30spc600 only; version v500r001c60spc500 only; version v500r005c00spc100 only; version v500r005c00spc200 only
• Huawei Secospace USG6500 Firmware: version v500r001c30spc200 only; version v500r001c30spc600 only; version v500r001c60spc500 only; version v500r005c00spc100 only; version v500r005c00spc200 only
• Huawei Secospace USG6600 Firmware: version v500r001c30spc200 only; version v500r001c30spc600 only; version v500r001c60spc500 only; version v500r005c00spc100 only; version v500r005c00spc200 only
• Huawei USG9500 Firmware: version v500r001c30spc200 only; version v500r001c30spc600 only; version v500r001c60spc500 only; version v500r005c00spc100 only; version v500r005c00spc200 only

Published 2021-11-23. Last modified 2026-06-17.