CVE-2021-45696
CRITICALCVSS 9.8/10EPSS 0.80%
Last modified
CVE-2021-45696 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sha2 Project | Sha2 | 0.9.7 |
References
- https://rustsec.org/advisories/RUSTSEC-2021-0100.htmlThird Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0100.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-45696?
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.
How severe is CVE-2021-45696?
CVE-2021-45696 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45696?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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Are you affected by CVE-2021-45696?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST