{"cve":"CVE-2021-25901","nvd":{"published":"2021-01-26T18:16:22.333","modified":"2026-06-17T03:42:32.843","status":"Modified","description":"An issue was discovered in the lazy-init crate through 2021-01-17 for Rust. Lazy lacks a Send bound, leading to a data race.","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-125"],"references":["https://rustsec.org/advisories/RUSTSEC-2021-0004.html","https://rustsec.org/advisories/RUSTSEC-2021-0004.html"],"products":["lazy-init_project:lazy-init"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-25901","score":0.01331,"percentile":0.71079,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w47j-hqpf-qw9w","url":"https://osv.dev/vulnerability/GHSA-w47j-hqpf-qw9w","summary":"Out of bounds read in lazy-init","modified":"2023-11-08T04:05:16.553479Z","packages":[{"ecosystem":"crates.io","name":"lazy-init","purl":"pkg:cargo/lazy-init","ranges":["<0.4.0"],"fixed":["0.4.0"]}]},{"id":"RUSTSEC-2021-0004","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0004","summary":"Missing Send bound for Lazy","modified":"2023-11-08T04:05:16.553479Z","packages":[{"ecosystem":"crates.io","name":"lazy-init","purl":"pkg:cargo/lazy-init","ranges":[">=0.0.0-0 <0.4.1-0"],"fixed":["0.4.1-0"]}]}],"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."]}