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Vulnerability record · CVE-2021-22309 · published 22 March 2021

CVE-2021-22309: Huawei usg9500 firmware vulnerability

Huawei · Usg9500 Firmware

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.

7.5 CVSS 3.1 High EPSS 0.79% · top 44.4% CWE-330 · CWE-330
7.5CVSS 3.1 base score, v2 5.0
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210202-01-fw-en Vendor Advisory
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210202-01-fw-en Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-22309), CISA KEV, FIRST EPSS (scores of 2026-10-17). This page is refreshed as NVD updates the record.