{"cve":"CVE-2021-22321","nvd":{"published":"2021-03-22T20:15:17.613","modified":"2026-06-17T03:36:59.863","status":"Modified","description":"There is a use-after-free vulnerability in a Huawei product. A module cannot deal with specific operations in special scenarios. Attackers can exploit this vulnerability by performing malicious operations. This can cause memory use-after-free, compromising normal service. Affected product include some versions of NIP6300, NIP6600, NIP6800, S1700, S2700, S5700, S6700 , S7700, S9700, Secospace USG6300, Secospace USG6500, Secospace USG6600 and USG9500.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-416"],"references":["https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-01-uaf-en","https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-01-uaf-en"],"products":["huawei:nip6300_firmware","huawei:nip6600_firmware","huawei:nip6800_firmware","huawei:s12700_firmware","huawei:s1700_firmware","huawei:s2700_firmware","huawei:s5700_firmware","huawei:s6700_firmware","huawei:s7700_firmware","huawei:s9700_firmware","huawei:secospace_usg6300_firmware","huawei:secospace_usg6500_firmware","huawei:secospace_usg6600_firmware","huawei:usg9500_firmware"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-22321","score":0.00741,"percentile":0.54655,"date":"2026-10-31"},"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."]}