What’s Vulnerable › Vulnerabilities

CVE-2021-45693

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% 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-908

Description

An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust. deserialize_string_primitive may read from uninitialized memory locations.

Affected products

• Messagepack-Rs Project Messagepack-Rs: before 0.8.1 — fixed in 0.8.1

How to fix

Upgrade to a fixed version: Messagepack-Rs Project Messagepack-Rs 0.8.1. Check the vendor advisory for mitigations.

References

• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/messagepack-rs/RUSTSEC-2021-0092.md
• https://rustsec.org/advisories/RUSTSEC-2021-0092.html
• https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/messagepack-rs/RUSTSEC-2021-0092.md
• https://rustsec.org/advisories/RUSTSEC-2021-0092.html

Get alerted when CVE-2021-45693 or the next vulnerability affects your stack