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CVE-2020-5232

28
FAUCET Score

CVE-2020-5232 describes a critical vulnerability in the Ethereum Name Service (ENS) where an ENS domain owner could transfer ownership and then unilaterally reclaim it without the new owner's consent, effectively creating a trapdoor. This high-severity flaw (CVSS 8.7) has a network attack vector with low complexity and requires user interaction, potentially leading to high confidentiality and integrity impacts. While a new ENS deployment addresses this issue, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.1.0CPE matchmatch criteria
cpe:2.3:a:ens.domains:ethereum_name_service:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 81st percentile among its peer group of 890 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: @ensdomains/ensFixed in: 0.4.0

Vendor Advisories (1)

npmGHSA-8f9f-pc5v-9r5hhigh

Malicious takeover of previously owned ENS names

Jan 30, 2020

References

github.com / ensdomains/ens/commit/36e10e71fcddcade88646821e0a57cc6c19e1ecf
PatchThird Party Advisory
github.com / ensdomains/ens/security/advisories/GHSA-8f9f-pc5v-9r5h
Third Party Advisory