How severe is CVE-2020-5232?

CVE-2020-5232 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-5232 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5232?

CVE-2020-5232 affects Ens.domains Ethereum Name Service. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5232?

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

When was CVE-2020-5232 published?

CVE-2020-5232 was published on 2020-01-31 and last updated on 2026-06-17.

CVE-2020-5232

CVE-2020-5232 is a high-severity vulnerability in Ens.domains Ethereum Name Service with a CVSS 3.x base score of 8.7. 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-285.

Key facts

Severity: High (CVSS 3.x base score 8.7)
CVSS v2: 4.9
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Ens.domains Ethereum Name Service
Published: 2020-01-31
Last modified: 2026-06-17

Description

A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.

Frequently asked questions

What is CVE-2020-5232?: A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.
How severe is CVE-2020-5232?: CVE-2020-5232 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-5232 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5232?: CVE-2020-5232 affects Ens.domains Ethereum Name Service. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5232?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-5232 published?: CVE-2020-5232 was published on 2020-01-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ens.domains:ethereum_name_service:*:*:*:*:*:*:*:*

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