{"cve":"CVE-2020-18734","nvd":{"published":"2021-08-23T21:15:09.413","modified":"2026-06-17T02:59:26.583","status":"Modified","description":"A stack buffer overflow in /ddsi/q_bitset.h of Eclipse IOT Cyclone DDS Project v0.1.0 causes the DDS subscriber server to crash.","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:H","score":7.5},"cwes":["CWE-787"],"references":["https://github.com/eclipse-cyclonedds/cyclonedds","https://github.com/eclipse-cyclonedds/cyclonedds/issues/476","https://projects.eclipse.org/projects/iot.cyclonedds","https://github.com/eclipse-cyclonedds/cyclonedds","https://github.com/eclipse-cyclonedds/cyclonedds/issues/476"],"products":["eclipse:cyclone_data_distribution_service"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2020-18734","score":0.01862,"percentile":0.79255,"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."]}