{"cve":"CVE-2021-22411","nvd":{"published":"2021-05-27T13:15:08.043","modified":"2026-06-17T03:37:10.913","status":"Modified","description":"There is an out-of-bounds write vulnerability in some Huawei products. The code of a module have a bad judgment logic. Attackers can exploit this vulnerability by performing multiple abnormal activities to trigger the bad logic and cause out-of-bounds write. This may compromise the normal service of the module.Affected product versions include: NGFW Module versions V500R005C00SPC100,V500R005C00SPC200;Secospace USG6300 versions V500R001C30SPC200,V500R001C30SPC600,V500R001C60SPC500,V500R005C00SPC100,V500R005C00SPC200;Secospace USG6500 versions V500R001C30SPC200,V500R001C30SPC600,V500R001C60SPC500,V500R005C00SPC100,V500R005C00SPC200;Secospace USG6600 versions V500R001C30SPC200,V500R001C30SPC600,V500R001C60SPC500,V500R005C00SPC100,V500R005C00SPC200;USG9500 versions V500R001C60SPC500,V500R005C00SPC100,V500R005C00SPC200.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-787"],"references":["https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210506-02-outofbounds-en","https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210506-02-outofbounds-en"],"products":["huawei:ngfw_module_firmware","huawei:secospace_usg6300_firmware","huawei:secospace_usg6500_firmware","huawei:secospace_usg6600_firmware","huawei:usg9500_firmware"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-22411","score":0.00581,"percentile":0.47746,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}