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.

Published: 2020-09-16 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-24376 is rated Moderate Risk (59.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.48%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-24376

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.93% 0.48% -0.45%
2 2025-03-29 0.48% 0.93% +0.45%
3 2025-03-17 — 0.48% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-24376

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.6 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 6.0 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2020-24376

Affected software / configurations for CVE-2020-24376

Vendor Product Version Raw CPE
free freebox_revolution_firmware < 4.2.3 cpe:2.3:o:free:freebox_revolution_firmware:*:*:*:*:*:*:*:*
free freebox_mini_firmware < 4.2.3 cpe:2.3:o:free:freebox_mini_firmware:*:*:*:*:*:*:*:*
free freebox_one_firmware < 4.2.3 cpe:2.3:o:free:freebox_one_firmware:*:*:*:*:*:*:*:*
free freebox_delta_firmware < 4.2.3 cpe:2.3:o:free:freebox_delta_firmware:*:*:*:*:*:*:*:*
free freebox_pop_firmware < 4.2.3 cpe:2.3:o:free:freebox_pop_firmware:*:*:*:*:*:*:*:*

References for CVE-2020-24376

cvelogic Threat Intelligence