How severe is CVE-2020-24374?

CVE-2020-24374 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-24374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24374?

CVE-2020-24374 affects Free Freebox Hd Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-24374 published?

CVE-2020-24374 was published on 2020-09-16 and last updated on 2026-06-17.

CVE-2020-24374

CVE-2020-24374 is a critical-severity vulnerability in Free Freebox Hd Firmware with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v2: 6.8
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Free Freebox Hd Firmware
Published: 2020-09-16
Last modified: 2026-06-17

Description

A DNS rebinding vulnerability in Freebox v5 before 1.5.29.

Frequently asked questions

What is CVE-2020-24374?: A DNS rebinding vulnerability in Freebox v5 before 1.5.29.
How severe is CVE-2020-24374?: CVE-2020-24374 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-24374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24374?: CVE-2020-24374 affects Free Freebox Hd Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-24374 published?: CVE-2020-24374 was published on 2020-09-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:free:freebox_hd_firmware:*:*:*:*:*:*:*:*

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