What’s Vulnerable › Vulnerabilities

CVE-2021-45696

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-27 · updated 2026-06-17
• Weakness: CWE-327

Description

An issue was discovered in the sha2 crate 0.9.7 before 0.9.8 for Rust. Hashes of long messages may be incorrect when the AVX2-accelerated backend is used.

Affected products

• Sha2 Project Sha2: 0.9.7

References

• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/sha2/RUSTSEC-2021-0100.md
• https://rustsec.org/advisories/RUSTSEC-2021-0100.html
• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/sha2/RUSTSEC-2021-0100.md
• https://rustsec.org/advisories/RUSTSEC-2021-0100.html

Get alerted when CVE-2021-45696 or the next vulnerability affects your stack