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CVE-2020-5232

Ethereum Name Service - Malicious takeover of previously owned ENS names

HIGH
8.7
CVSS Score
Published: January 30, 2020 at 11:55 PM UTC
Updated: June 17, 2026 at 03:21 AM UTC
2 products affected across 1 vendorEthereum Name ServiceDomains Ethereum Name Service

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Severity
HIGH8.7
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ethereum Name Service· Ens Domains
95%
v ≤ 0.1.0
Domains Ethereum Name Service· Ens Domains
60%
v < 0.4.0
Affected range stops below 0.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/ensdomains/ens/commit/36e10e71fcddcade88646821e0a57cc6c19e1ecf
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/ensdomains/ens/security/advisories/GHSA-8f9f-pc5v-9r5h

CVSS

8.7HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-285NVD-CWE-Other

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