{"cve":"CVE-2021-21734","nvd":{"published":"2021-05-28T12:15:07.603","modified":"2026-06-17T03:36:03.653","status":"Modified","description":"Some PON MDU devices of ZTE stored sensitive information in plaintext, and users with login authority can obtain it by inputing command. This affects: ZTE PON MDU device ZXA10 F821 V1.7.0P3T22, ZXA10 F822 V1.4.3T6, ZXA10 F819 V1.2.1T5, ZXA10 F832 V1.1.1T7, ZXA10 F839 V1.1.0T8, ZXA10 F809 V3.2.1T1, ZXA10 F822P V1.1.1T7, ZXA10 F832 V2.00.00.01","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-312"],"references":["https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015524","https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015524"],"products":["zte:zxa10_f809_firmware","zte:zxa10_f819_firmware","zte:zxa10_f821_firmware","zte:zxa10_f822_firmware","zte:zxa10_f822p_firmware","zte:zxa10_f832_firmware","zte:zxa10_f832v2_firmware","zte:zxa10_f839_firmware"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-21734","score":0.00512,"percentile":0.43691,"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."]}