{"api_version":"1","generated_at":"2026-07-23T12:54:34+00:00","cve":"CVE-2021-38423","urls":{"html":"https://cve.report/CVE-2021-38423","api":"https://cve.report/api/cve/CVE-2021-38423.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-38423","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-38423"},"summary":{"title":"CVE-2021-38423","description":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.","state":"PUBLIC","assigner":"ics-cert@hq.dhs.gov","published_at":"2022-05-05 17:15:00","updated_at":"2022-05-13 03:47:00"},"problem_types":["CWE-131"],"metrics":[],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","name":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","refsource":"CONFIRM","tags":[],"title":"Multiple Data Distribution Service (DDS) Implementations (Update A) | CISA","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-38423","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38423","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Federico Maggi (Trend Micro Research), Ta-Lun Yen, and Chizuru Toyama (TXOne Networks, Trend Micro) reported these vulnerabilities to CISA. In addition, Patrick Kuo, Mars Cheng (TXOne Networks, Trend Micro), Víctor Mayoral-Vilches (Alias Robotics), and Erik Boasson (ADLINK Technology) also contributed to this research.","lang":""}],"nvd_cpes":[{"cve_year":"2021","cve_id":"38423","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"gurum","cpe5":"gurumdds","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"ics-cert@hq.dhs.gov","ID":"CVE-2021-38423","STATE":"PUBLIC","TITLE":"GurumDDS Heap-based Incorrect Calculation of Buffer Size"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"GurumDDS","version":{"version_data":[{"version_value":"all versions"}]}}]},"vendor_name":"GurumNetworks"}]}},"credit":[{"lang":"eng","value":"Federico Maggi (Trend Micro Research), Ta-Lun Yen, and Chizuru Toyama (TXOne Networks, Trend Micro) reported these vulnerabilities to CISA. In addition, Patrick Kuo, Mars Cheng (TXOne Networks, Trend Micro), Víctor Mayoral-Vilches (Alias Robotics), and Erik Boasson (ADLINK Technology) also contributed to this research."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-131 Incorrect Calculation of Buffer Size"}]}]},"references":{"reference_data":[{"name":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","refsource":"CONFIRM","url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"}]},"solution":[{"lang":"eng","value":"Users should contact GurumNetworks for assistance.  contact@gurum.cc"}],"source":{"discovery":"EXTERNAL"}},"nvd":{"publishedDate":"2022-05-05 17:15:00","lastModifiedDate":"2022-05-13 03:47:00","problem_types":["CWE-131"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:gurum:gurumdds:*:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"38423","Ordinal":"214085","Title":"CVE-2021-38423","CVE":"CVE-2021-38423","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"38423","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}