What is CVE-2021-46225?

CVE-2021-46225 is a medium-severity vulnerability in Libmeshb Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2022-01-12.

How severe is CVE-2021-46225?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Libmeshb Project

CVE-2021-46225

A buffer overflow in the GmfOpenMesh() function of libMeshb v7.61 allows attackers to cause a Denial of Service (DoS) via a crafted MESH file.

Vulnerability class: Buffer Overflow

Published 2022-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Libmeshb Project — versions 7.61

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/LoicMarechal/libMeshb/issues/21 (Exploit, Third Party Advisory, Issue Tracking)
github.com/LoicMarechal/libMeshb/commit/8cd68c54e0647c0030ae4506a225ad4a2655c316 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46225?: CVE-2021-46225 is a medium-severity vulnerability in Libmeshb Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2022-01-12.
How severe is CVE-2021-46225?: Medium severity. CVSS v3 base score is 6.5 out of 10.