CVE-2021-45693 json
An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust.
published 4y ago modified 4mo ago also EUVD-2022-0631
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust. deserialize_string_primitive may read from uninitialized memory locations.
Patch / fix
- messagepack-rs_project messagepack-rs 0.8.1
Is CVE-2021-45693 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-908 Use of Uninitialized Resource
References
-
rustsec.org
/advisories/RUSTSEC-2021-0092.html
third-party-advisory
-
raw.githubusercontent.com
/rustsec/advisory-db/main/crates/messagepack-rs/RUSTSEC-2021-0092.md
third-party-advisory
Sources
- CVE List CVE-2021-45693
- NVD CVE-2021-45693
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.