What’s Vulnerable › Vulnerabilities

CVE-2021-22320

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-22 · updated 2026-06-17

Description

There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages correctly. Attackers can exploit this vulnerability by sending malicious messages to an affected module. This can lead to denial of service. Affected product include some versions of IPS Module, NGFW Module, NIP6600, NIP6800, Secospace USG6300, Secospace USG6500 and Secospace USG6600.

Affected products

• Huawei Ips Module Firmware: v500r005c00spc100, v500r005c00spc200, v500r005c20spc300
• Huawei Ngfw Module Firmware: v500r005c00spc100, v500r005c00spc200, v500r005c20spc300
• Huawei Nip6600 Firmware: v500r001c30spc200, v500r001c30spc600, v500r001c60spc500, v500r005c00spc100, v500r005c00spc200, v500r005c20spc300 (+1)
• Huawei Nip6800 Firmware: v500r001c60spc500, v500r005c00spc100, v500r005c00spc200, v500r005c20spc300, v500r005c20spc500
• Huawei Secospace Usg6300 Firmware: v500r001c30spc200, v500r001c30spc600, v500r001c60spc500, v500r005c00spc100, v500r005c00spc200, v500r005c20spc300 (+1)
• Huawei Secospace Usg6500 Firmware: v500r001c30spc200, v500r001c30spc600, v500r001c60spc500, v500r005c00spc100, v500r005c00spc200, v500r005c20spc300 (+1)
• Huawei Technologies Co., Ltd. Secospace USG6600: v500r001c30spc200, v500r001c30spc600, v500r001c60spc500, v500r005c00spc100, v500r005c00spc200, v500r005c20spc300 (+1)

References

• https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-03-dos-en
• https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-03-dos-en

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