{"id":"CVE-2020-35880","aliases":["EUVD-2021-1916","GHSA-wgx2-6432-j3fw","RUSTSEC-2020-0025"],"status":"published","title":"Unsoundness in bigint","description":"An issue was discovered in the bigint crate through 2020-05-07 for Rust. It allows a soundness violation.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01534,"percentile":0.75028,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-704"],"published":"2020-05-07T12:00:00Z","modified":"2026-06-17T03:14:31Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"bigint","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.4.3"}]}]},{"source":"osv","ecosystem":"crates.io","package":"bigint","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"4.4.3"}]}]},{"source":"osv","ecosystem":"crates.io","package":"bigint","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"bigint_project","product":"bigint"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0025.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35880","tags":["advisory"]},{"url":"https://github.com/rustsec/advisory-db/pull/290","tags":["web"]},{"url":"https://github.com/paritytech/bigint/commit/7e71521a61b009afc94c91135353102658550d42","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wgx2-6432-j3fw"},{"url":"https://github.com/paritytech/bigint","tags":["package"]},{"url":"https://crates.io/crates/bigint","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-35880","description":"An issue was discovered in the bigint crate through 2020-05-07 for Rust. It allows a soundness violation.","status":"published","published":"2020-12-31T08:26:34Z","modified":"2024-08-04T17:16:13.173Z","updated_at":"2026-11-02T14:35:57.975444Z"}],"euvd":[{"id":"EUVD-2021-1916","description":"An issue was discovered in the bigint crate through 2020-05-07 for Rust. It allows a soundness violation.","status":"published","published":"2020-12-31T08:26:34Z","modified":"2024-08-04T17:16:13Z","updated_at":"2026-11-03T03:07:04.065361Z"}],"ghsa":[{"id":"GHSA-wgx2-6432-j3fw","title":"Unsoundness in bigint","description":"An issue was discovered in the bigint crate through 2020-05-07 for Rust. It allows a soundness violation.","status":"published","published":"2021-08-25T20:48:04Z","modified":"2023-01-09T05:05:14Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-704"],"updated_at":"2026-11-02T14:36:11.367194Z"}],"nvd":[{"id":"CVE-2020-35880","description":"An issue was discovered in the bigint crate through 2020-05-07 for Rust. It allows a soundness violation.","status":"published","published":"2020-12-31T10:15:16.1Z","modified":"2026-06-17T03:14:31.43Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:28.340168Z"}],"osv":[{"id":"GHSA-wgx2-6432-j3fw","title":"Unsoundness in bigint","description":"An issue was discovered in the bigint crate through 2020-05-07 for Rust. It allows a soundness violation.","status":"published","published":"2021-08-25T20:48:04Z","modified":"2023-11-08T04:03:37.195023Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-704"],"updated_at":"2026-11-02T15:46:58.767335Z"},{"id":"RUSTSEC-2020-0025","title":"bigint is unmaintained, use uint instead","description":"The `bigint` crate is not maintained any more and contains several known bugs (including a soundness bug);\nuse [`uint`](https://crates.io/crates/uint) instead.","status":"published","published":"2020-05-07T12:00:00Z","modified":"2023-11-08T04:03:37.195023Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}