CVE-2021-33889 json
OpenThread wpantund through 2021-07-02 has a stack-based Buffer Overflow because of an inconsistency in the integer data type for metric_le…
published 2021-07-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20562
- cvss
- 6.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
OpenThread wpantund through 2021-07-02 has a stack-based Buffer Overflow because of an inconsistency in the integer data type for metric_len.
Patch / fix
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0019/FEYE-2021-0019.md
patch, third-party-advisory
-
github.com
/openthread/wpantund/issues/502
patch, third-party-advisory
-
github.com
/openthread/wpantund/releases
third-party-advisory
Sources
- CVE List CVE-2021-33889
- NVD CVE-2021-33889
Fencer Vulns 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.