{"id":"CVE-2021-26305","aliases":["GHSA-37jj-wp7g-7wj4","RUSTSEC-2021-0012"],"url":"https://o3.security/vulnerability/CVE-2021-26305","summary":"Read of uninitialized memory in cdr","details":"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.","published":"2021-01-29T03:15:12.363Z","modified":"2026-07-08T21:27:19.870154Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.01688,"percentile":0.74893,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"crates.io","name":"cdr","fixedVersion":"0.2.4"}],"fix":null,"references":[{"type":"EVIDENCE","url":"https://rustsec.org/advisories/RUSTSEC-2021-0012.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T21:27:19.870154Z"}}