CVE-2021-25835

mediumpriority · track · 30OT risk · elevatedEPSS 0.013 · 70 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.31% (70th) EPSS

CVSS 5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

Cosmos Network Ethermint <= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the same chainIDEpoch and signature schemes with ethereum for compatibility, a verified signature in ethereum is still valid in ethermint with the same msg content and chainIDEpoch, which enables "cross-chain transaction replay" attack.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-294USprimaryCWE-294USCWE-295US

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
chainsafe ethermint≤ 0.4.0nvdUScpe:2.3:a:chainsafe:ethermint:*:*:*:*:*:*:*:*
Go github.com/cosmos/ethermint< 0.4.1osvUSpkg:golang/github.com/cosmos/ethermint

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-x5f3-qmwj-4f84Authentication bypass by capture-replay in github.com/cosmos/ethermint2022-02-15ghsa · osvUS
Cosmos Network Ethermint <= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the same chainIDEpoch and signature schemes with ethereum for compatibility, a verified signature in ethereum is still valid in ethermint with the same msg content and chainIDEpoch, which enables "cross-chain transaction replay" attack. ### Specific Go Packages Affected github.com/cosmos/ethermint/rpc/namespaces/eth
GO-2022-0889Authentication bypass by capture-replay in github.com/cosmos/ethermint2024-08-21vendor · osvUS
Authentication bypass by capture-replay in github.com/cosmos/ethermint

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2021-02-08modified 2026-06-17

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+336 more

references (7)

External citations — patches, advisories, analysis.

scry

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