{"cve":"CVE-2021-26305","nvd":{"published":"2021-01-29T03:15:12.363","modified":"2026-06-17T03:43:04.767","status":"Modified","description":"An issue was discovered in Deserializer::read_vec in the cdr crate before 0.2.4 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated heap memory, violating soundness.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-908"],"references":["https://rustsec.org/advisories/RUSTSEC-2021-0012.html","https://rustsec.org/advisories/RUSTSEC-2021-0012.html"],"products":["cdr_project:cdr"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-26305","score":0.01708,"percentile":0.77322,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-37jj-wp7g-7wj4","url":"https://osv.dev/vulnerability/GHSA-37jj-wp7g-7wj4","summary":"Read of uninitialized memory in cdr","modified":"2023-11-08T04:05:20.783188Z","packages":[{"ecosystem":"crates.io","name":"cdr","purl":"pkg:cargo/cdr","ranges":["<0.2.4"],"fixed":["0.2.4"]}]},{"id":"RUSTSEC-2021-0012","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0012","summary":"Reading uninitialized memory can cause UB (`Deserializer::read_vec`)","modified":"2023-11-08T04:05:20.783188Z","packages":[{"ecosystem":"crates.io","name":"cdr","purl":"pkg:cargo/cdr","ranges":[">=0.0.0-0 <0.2.4"],"fixed":["0.2.4"]}]}],"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."]}