{"id":"CVE-2021-45709","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-45709","summary":"An issue was discovered in the crypto2 crate through 2021-10-08 for Rust. During Chacha20 encryption and decryption, an unaligned read of a u32 may occur.","details":"An issue was discovered in the crypto2 crate through 2021-10-08 for Rust. During Chacha20 encryption and decryption, an unaligned read of a u32 may occur.","published":"2021-12-27T00:15:10.017","modified":"2026-06-17T04:13:59.617","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":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/crypto2/RUSTSEC-2021-0121.md"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2021-0121.html"},{"type":"ADVISORY","url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/crypto2/RUSTSEC-2021-0121.md"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2021-0121.html"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T04:13:59.617"}}