What is CVE-2020-7459?

CVE-2020-7459 is a medium-severity vulnerability in FreeBSD, classified under Improper Input Validation. CVSS score: 6.8/10. Published 2020-08-06.

How severe is CVE-2020-7459?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Improper input validation in FreeBSD

CVE-2020-7459

In FreeBSD 12.1-STABLE before r362166, 12.1-RELEASE before p8, 11.4-STABLE before r362167, 11.4-RELEASE before p2, and 11.3-RELEASE before p12, missing length validation code common to mulitple USB network drivers allows a malicious USB device to write beyond the end of an allocated network packet buffer.

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

Published 2020-08-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (32.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

FreeBSD — versions 11.3, 11.4, 12.1
FreeBSD — versions FreeBSD 12.1-RELEASE before p8, 11.4-RELEASE before p2, 11.3-RELEASE before p12

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security.FreeBSD.org/advisories/FreeBSD-SA-20:21.usb_net.asc (Vendor Advisory)
security.netapp.com/advisory/ntap-20200821-0005/ (Third Party Advisory)

Frequently asked questions

What is CVE-2020-7459?: CVE-2020-7459 is a medium-severity vulnerability in FreeBSD, classified under Improper Input Validation. CVSS score: 6.8/10. Published 2020-08-06.
How severe is CVE-2020-7459?: Medium severity. CVSS v3 base score is 6.8 out of 10.