{"api_version":"1","generated_at":"2026-07-23T21:15:29+00:00","cve":"CVE-2021-21724","urls":{"html":"https://cve.report/CVE-2021-21724","api":"https://cve.report/api/cve/CVE-2021-21724.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-21724","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21724"},"summary":{"title":"CVE-2021-21724","description":"A ZTE product has a memory leak vulnerability. Due to the product's improper handling of memory release in certain scenarios, a local attacker with device permissions repeatedly attenuated the optical signal to cause memory leak and abnormal service. This affects: ZXR10 8900E, all versions up to V3.03.20R2B30P1.","state":"PUBLIC","assigner":"psirt@zte.com.cn","published_at":"2021-02-26 03:15:00","updated_at":"2021-03-04 13:49:00"},"problem_types":["CWE-401"],"metrics":[],"references":[{"url":"http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584","name":"http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584","refsource":"MISC","tags":["Vendor Advisory"],"title":"Security Bulletin Details","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-21724","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21724","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"21724","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"zte","cpe5":"zxr10_8900e","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21724","vulnerable":"0","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"zte","cpe5":"zxr10_8900e","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21724","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"zte","cpe5":"zxr10_8900e","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21724","vulnerable":"1","versionEndIncluding":"3.03.20r2b30p1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"zte","cpe5":"zxr10_8900e_firmware","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-21724","ASSIGNER":"psirt@zte.com.cn","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"ZXR10 8900E","version":{"version_data":[{"version_value":"all versions up to V3.03.20R2B30P1"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Memory Leak"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584","url":"http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584"}]},"description":{"description_data":[{"lang":"eng","value":"A ZTE product has a memory leak vulnerability. Due to the product's improper handling of memory release in certain scenarios, a local attacker with device permissions repeatedly attenuated the optical signal to cause memory leak and abnormal service. This affects: ZXR10 8900E, all versions up to V3.03.20R2B30P1."}]}},"nvd":{"publishedDate":"2021-02-26 03:15:00","lastModifiedDate":"2021-03-04 13:49:00","problem_types":["CWE-401"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":4.4,"baseSeverity":"MEDIUM"},"exploitabilityScore":0.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:N/I:N/A:P","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":2.1},"severity":"LOW","exploitabilityScore":3.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:zte:zxr10_8900e_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"3.03.20r2b30p1","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:zte:zxr10_8900e:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"21724","Ordinal":"196413","Title":"CVE-2021-21724","CVE":"CVE-2021-21724","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"21724","Ordinal":"1","NoteData":"A ZTE product has a memory leak vulnerability. Due to the product's improper handling of memory release in certain scenarios, a local attacker with device permissions repeatedly attenuated the optical signal to cause memory leak and abnormal service. This affects: ZXR10 8900E, all versions up to V3.03.20R2B30P1.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"21724","Ordinal":"2","NoteData":"2021-02-25","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"21724","Ordinal":"3","NoteData":"2021-02-25","Type":"Other","Title":"Modified"}]}}}