{"cve":"CVE-2021-45691","nvd":{"published":"2021-12-27T00:15:09.283","modified":"2026-06-17T04:13:57.400","status":"Modified","description":"An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust. deserialize_string may read from uninitialized memory locations.","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://raw.githubusercontent.com/rustsec/advisory-db/main/crates/messagepack-rs/RUSTSEC-2021-0092.md","https://rustsec.org/advisories/RUSTSEC-2021-0092.html","https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/messagepack-rs/RUSTSEC-2021-0092.md","https://rustsec.org/advisories/RUSTSEC-2021-0092.html"],"products":["messagepack-rs_project:messagepack-rs"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-45691","score":0.0123,"percentile":0.6895,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hr52-f9vp-582c","url":"https://osv.dev/vulnerability/GHSA-hr52-f9vp-582c","summary":"Use of Uninitialized Resource in messagepack-rs.","modified":"2024-03-15T00:05:17.689306Z","packages":[{"ecosystem":"crates.io","name":"messagepack-rs","purl":"pkg:cargo/messagepack-rs","ranges":["<=0.8.1"],"fixed":[]}]},{"id":"GHSA-jqjj-r4qp-x2gh","url":"https://osv.dev/vulnerability/GHSA-jqjj-r4qp-x2gh","summary":"Use of Uninitialized Resource in messagepack-rs.","modified":"2024-03-15T00:05:17.689306Z","packages":[{"ecosystem":"crates.io","name":"messagepack-rs","purl":"pkg:cargo/messagepack-rs","ranges":["<=0.8.1"],"fixed":[]}]},{"id":"GHSA-jwfh-j623-m97h","url":"https://osv.dev/vulnerability/GHSA-jwfh-j623-m97h","summary":"Use of Uninitialized Resource in messagepack-rs","modified":"2024-03-15T00:05:17.689306Z","packages":[{"ecosystem":"crates.io","name":"messagepack-rs","purl":"pkg:cargo/messagepack-rs","ranges":["<=0.8.1"],"fixed":[]}]},{"id":"GHSA-m325-rxjv-pwph","url":"https://osv.dev/vulnerability/GHSA-m325-rxjv-pwph","summary":"Deserialization functions pass uninitialized memory to user-provided Read","modified":"2024-03-15T00:05:17.689306Z","packages":[{"ecosystem":"crates.io","name":"messagepack-rs","purl":"pkg:cargo/messagepack-rs","ranges":["<=0.8.1"],"fixed":[]}]},{"id":"GHSA-vw5m-qw2r-m923","url":"https://osv.dev/vulnerability/GHSA-vw5m-qw2r-m923","summary":"Use of Uninitialized Resource in messagepack-rs.","modified":"2024-03-15T00:05:17.689306Z","packages":[{"ecosystem":"crates.io","name":"messagepack-rs","purl":"pkg:cargo/messagepack-rs","ranges":["<=0.8.1"],"fixed":[]}]},{"id":"RUSTSEC-2021-0092","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0092","summary":"Deserialization functions pass uninitialized memory to user-provided Read","modified":"2024-03-15T00:05:17.689306Z","packages":[{"ecosystem":"crates.io","name":"messagepack-rs","purl":"pkg:cargo/messagepack-rs","ranges":[">=0.0.0-0"],"fixed":[]}]}],"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."]}