What is CVE-2020-24375?

CVE-2020-24375 is a medium-severity vulnerability in Free Freebox Server, classified under Authentication Bypass by Spoofing. CVSS score: 6.5/10. Published 2020-10-19.

How severe is CVE-2020-24375?

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

Vulnerability in Free Freebox Server

CVE-2020-24375

A DNS rebinding vulnerability in the UPnP MediaServer implementation in Freebox Server before 4.2.3.

Published 2020-10-19 · 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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

dev.freebox.fr/blog/ (Release Notes, Vendor Advisory)
www.gabriel.urdhr.fr/2020/09/23/dns-rebinding-freebox/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-24375?: CVE-2020-24375 is a medium-severity vulnerability in Free Freebox Server, classified under Authentication Bypass by Spoofing. CVSS score: 6.5/10. Published 2020-10-19.
How severe is CVE-2020-24375?: Medium severity. CVSS v3 base score is 6.5 out of 10.