CVE-2021-22309: Huawei USG9500 Firmware

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

There is insecure algorithm vulnerability in Huawei products. A module uses less random input in a secure mechanism. Attackers can exploit this vulnerability by brute forcing to obtain sensitive message. This can lead to information leak. Affected product versions include:USG9500 versions V500R001C30SPC200, V500R001C60SPC500,V500R005C00SPC200;USG9520 versions V500R005C00;USG9560 versions V500R005C00;USG9580 versions V500R005C00.

Affected products

• Huawei USG9500 Firmware: version v500r001c30spc200 only; version v500r001c60spc500 only; version v500r005c00spc200 only
• Huawei USG9520 Firmware: version v500r005c00 only
• Huawei USG9560 Firmware: version v500r005c00 only
• Huawei USG9580 Firmware: version v500r005c00 only

Published 2021-03-22. Last modified 2026-06-17.