{"id":"CVE-2021-22309","aliases":["EUVD-2021-9455","GHSA-3fcq-hfv4-xfg4"],"status":"published","title":"There is insecure algorithm vulnerability in Huawei products. A module uses less random input in...","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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00794,"percentile":0.56723,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327","CWE-330"],"published":"2021-03-22T17:42:50Z","modified":"2026-06-17T03:36:58Z","products":[{"vendor":"huawei","product":"usg9500_firmware"},{"vendor":"huawei","product":"usg9520_firmware"},{"vendor":"huawei","product":"usg9560_firmware"},{"vendor":"huawei","product":"usg9580_firmware"}],"references":[{"url":"https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210202-01-fw-en","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22309"},{"url":"https://github.com/advisories/GHSA-3fcq-hfv4-xfg4"}],"sources":{"cve":[{"id":"CVE-2021-22309","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.","status":"published","published":"2021-03-22T17:42:50Z","modified":"2024-08-03T18:37:18.48Z","updated_at":"2026-11-02T14:32:57.701381Z"}],"euvd":[{"id":"EUVD-2021-9455","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.","status":"published","published":"2021-03-22T17:42:50Z","modified":"2024-08-03T18:37:18Z","updated_at":"2026-11-03T03:25:03.183524Z"}],"ghsa":[{"id":"GHSA-3fcq-hfv4-xfg4","title":"There is insecure algorithm vulnerability in Huawei products. A module uses less random input in...","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.","status":"published","published":"2022-05-24T17:44:59Z","modified":"2023-01-27T05:02:48Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:42:06.500861Z"}],"nvd":[{"id":"CVE-2021-22309","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.","status":"published","published":"2021-03-22T18:15:14.433Z","modified":"2026-06-17T03:36:58.61Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-330"],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}