What is CVE-2021-39137?

CVE-2021-39137 is a medium-severity vulnerability in Ethereum Go-Ethereum, classified under CWE-436. CVSS score: 6.5/10. Published 2021-08-24.

How severe is CVE-2021-39137?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-39137 known to be exploited?

7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Ethereum Go-Ethereum

CVE-2021-39137

go-ethereum is the official Go implementation of the Ethereum protocol. In affected versions a consensus-vulnerability in go-ethereum (Geth) could cause a chain split, where vulnerable versions refuse to accept the canonical chain. Further details about the vulnerability will be disclosed at a later date. A patch is included in the upcoming `v1.10.8` release. No workaround are available.

EPSS: 0.013 (68.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ethereum Go-ethereum — versions >= 1.10.0, < 1.10.8
Ethereum Go_ethereum

Weakness classification (CWE)

CWE-436

Public proof-of-concept exploits

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-39137?: CVE-2021-39137 is a medium-severity vulnerability in Ethereum Go-Ethereum, classified under CWE-436. CVSS score: 6.5/10. Published 2021-08-24.
How severe is CVE-2021-39137?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-39137 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.