What is CVE-2020-24376?

CVE-2020-24376 is a critical-severity vulnerability in Free Freebox Delta, classified under Improper Input Validation. CVSS score: 9.6/10. Published 2020-09-16.

How severe is CVE-2020-24376?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Improper input validation in Free Freebox Delta

CVE-2020-24376

A DNS rebinding vulnerability in the UPnP IGD implementations in Freebox v5 before 1.5.29 and Freebox Server before 4.2.3.

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

Published 2020-09-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.4th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.4% 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

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

dev.freebox.fr/blog/ (Vendor Advisory)
www.gabriel.urdhr.fr/2020/09/23/dns-rebinding-freebox/

Frequently asked questions

What is CVE-2020-24376?: CVE-2020-24376 is a critical-severity vulnerability in Free Freebox Delta, classified under Improper Input Validation. CVSS score: 9.6/10. Published 2020-09-16.
How severe is CVE-2020-24376?: Critical severity. CVSS v3 base score is 9.6 out of 10.