PatchTheCVECVE-2021-25837: Cosmos Network Ethermint <= v0.4.0 is affected by cache lifecycle inconsistency in the EVM module
CVE-2021-25837 is a high-severity flaw (CVSS 7.5) affecting ethermint. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Cosmos Network Ethermint <= v0.4.0 is affected by cache lifecycle inconsistency in the EVM module. Due to the inconsistency between the Storage caching cycle and the Tx processing cycle, Storage changes caused by a failed transaction are improperly reserved in memory. Although the bad storage cache data will be discarded at EndBlock, it is still valid in the current block, which enables many possible attacks such as an "arbitrary mint token".
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.5% (top 25%) |
| CISA exploited list | No |
| Published | 2021-02-08 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-25837?
ethermint: upgrade to newer than 0.4.0. Exact commands for each OS are on this page.
Is CVE-2021-25837 being exploited?
CVE-2021-25837 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-25837 affect?
CVE-2021-25837 affects ethermint. Severity is high (CVSS 7.5). Cosmos Network Ethermint <= v0.4.0 is affected by cache lifecycle inconsistency in the EVM module. Due to the inconsistency between the Storage caching cycle and the Tx processing cycle, Storage changes caused by a failed transaction are im
How urgent is CVE-2021-25837?
Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
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