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CVE-2021-25834

22
FAUCET Score

CVE-2021-25834 describes a transaction replay vulnerability in Cosmos Network Ethermint versions up to v0.4.0, specifically within its EVM module. An attacker can exploit this by replaying a victim's large nonce transaction through the application. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity that could lead to high integrity impact without requiring user interaction. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.4.0CPE matchmatch criteria
cpe:2.3:a:chainsafe:ethermint:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 42nd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (1)

gopatch availablevia ghsa
Product: github.com/cosmos/ethermintFixed in: 0.4.1

Vendor Advisories (1)

goGHSA-93p5-8fqw-wjx3high

Authentication bypass by capture-replay in github.com/cosmos/ethermint

Feb 15, 2022

References

github.com / cosmos/ethermint/issues/686
Third Party Advisory