{"id":"CVE-2021-45683","aliases":["EUVD-2022-0566","GHSA-c6px-4grw-hrjr","GHSA-cw4j-cf6c-mmfv","RUSTSEC-2021-0085"],"status":"published","title":"'Read' on uninitialized memory may cause UB","description":"An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.","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":0.0123,"percentile":0.69189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2021-01-03T12:00:00Z","modified":"2026-06-17T04:13:56Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"binjs_io","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.2.1"}]}]},{"source":"ghsa","ecosystem":"crates.io","package":"binjs_io","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.2.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"binjs_io","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.2.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"binjs_io","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.2.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"binjs_io","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"binjs_io_project","product":"binjs_io"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2021-0085.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/binjs_io/RUSTSEC-2021-0085.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://github.com/binast/binjs-ref/issues/460","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-c6px-4grw-hrjr"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45683","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cw4j-cf6c-mmfv"},{"url":"https://github.com/binast/binjs-ref","tags":["package"]},{"url":"https://github.com/Yoric/binjs-ref","tags":["package"]},{"url":"https://crates.io/crates/binjs_io","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-45683","description":"An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.","status":"published","published":"2021-12-26T21:52:35Z","modified":"2024-08-04T04:47:01.823Z","updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2022-0566","description":"An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.","status":"published","published":"2021-12-26T21:52:35Z","modified":"2024-08-04T04:47:01Z","updated_at":"2026-11-03T03:08:25.77408Z"}],"ghsa":[{"id":"GHSA-cw4j-cf6c-mmfv","title":"Use of Uninitialized Resource in binjs_io.","description":"An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.","status":"published","published":"2022-01-06T22:14:24Z","modified":"2023-06-13T16:28:28Z","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-908"],"updated_at":"2026-11-02T14:36:53.103029Z"},{"id":"GHSA-c6px-4grw-hrjr","title":"'Read' on uninitialized memory may cause UB","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation. The crate currently contains 4 occurrences of such cases. Arbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.\n","status":"published","published":"2022-06-16T23:42:49Z","modified":"2023-06-13T16:28:08Z","updated_at":"2026-11-02T14:36:53.103029Z"}],"nvd":[{"id":"CVE-2021-45683","description":"An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.","status":"published","published":"2021-12-27T00:15:08.947Z","modified":"2026-06-17T04:13:56.48Z","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"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"GHSA-cw4j-cf6c-mmfv","title":"Use of Uninitialized Resource in binjs_io.","description":"An issue was discovered in the binjs_io crate through 2021-01-03 for Rust. The Read method may read from uninitialized memory locations.","status":"published","published":"2022-01-06T22:14:24Z","modified":"2023-11-08T04:07:21.616611Z","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-908"],"updated_at":"2026-11-02T15:46:45.639885Z"},{"id":"GHSA-c6px-4grw-hrjr","title":"'Read' on uninitialized memory may cause UB","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation. The crate currently contains 4 occurrences of such cases. Arbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.\n","status":"published","published":"2022-06-16T23:42:49Z","modified":"2023-11-08T04:07:21.616611Z","updated_at":"2026-11-02T15:46:44.571161Z"},{"id":"RUSTSEC-2021-0085","title":"'Read' on uninitialized memory may cause UB","description":"Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation. The crate currently contains 4 occurrences of such cases.\n\nArbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.","status":"published","published":"2021-01-03T12:00:00Z","modified":"2023-11-08T04:07:21.616611Z","updated_at":"2026-11-02T15:53:39.492624Z"}]}}