CVE-2020-26265

low-risk

Published 2020-12-11

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made -- all users are recommended to upgrade to a newer version.

Do I need to act?

0.27% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Go Ethereum

Affected Vendors

Ethereum

References (4)

Third Party Advisory https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20

Third Party Advisory https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4

Third Party Advisory https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20

Third Party Advisory https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4

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low-risk

Severity 17/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal