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CVE-2021-25835

HIGH
7.5
CVSS Score
Published: February 8, 2021 at 05:57 PM UTC
Updated: June 17, 2026 at 03:42 AM UTC
1 product affected across 1 vendorEthermint

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

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.

Affected

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

Ethermint· Chainsafe
95%
v ≤ 0.4.0

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_MISCThird Party Advisory
Source: [email protected]
https://github.com/cosmos/ethermint/issues/687
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/cosmos/ethermint/pull/692

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-294

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