What is CVE-2021-29629?

CVE-2021-29629 is a high-severity vulnerability in FreeBSD, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-05-28.

How severe is CVE-2021-29629?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in FreeBSD

CVE-2021-29629

In FreeBSD 13.0-STABLE before n245765-bec0d2c9c841, 12.2-STABLE before r369859, 11.4-STABLE before r369866, 13.0-RELEASE before p1, 12.2-RELEASE before p7, and 11.4-RELEASE before p10, missing message validation in libradius(3) could allow malicious clients or servers to trigger denial of service in vulnerable servers or clients respectively.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-05-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (65.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

FreeBSD — versions 11.4, 12.2, 13.0
FreeBSD — versions FreeBSD 13.0-RELEASE before p1, 12.2-RELEASE before p7, 11.4-RELEASE before p10

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security.FreeBSD.org/advisories/FreeBSD-SA-21:12.libradius.asc (Mitigation, Vendor Advisory)
security.netapp.com/advisory/ntap-20210713-0003/ (Third Party Advisory)

Frequently asked questions

What is CVE-2021-29629?: CVE-2021-29629 is a high-severity vulnerability in FreeBSD, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-05-28.
How severe is CVE-2021-29629?: High severity. CVSS v3 base score is 7.5 out of 10.