CVE-2022-31111: Frontier is Substrate's Ethereum compatibility layer

This month

MEDIUM 5.3REMOTEMITIGATE

CVE-2022-31111 is a medium-severity flaw (CVSS 5.3) affecting frontier. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Frontier is Substrate's Ethereum compatibility layer. In affected versions the truncation done when converting between EVM balance type and Substrate balance type was incorrectly implemented. This leads to possible discrepancy between appeared EVM transfer value and actual Substrate value transferred. It is recommended that an emergency upgrade to be planned and EVM execution temporarily paused in the mean time. The issue is patched in Frontier m

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-670
Published	2022-07-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: parity

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-07-06 18:15 UTCPublished CVE record published
2026-06-17 04:44 UTCUpdated Record last modified

parity frontier MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy frontier || rpm -q frontier || frontier --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2022-31111?

frontier: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-31111 being exploited?

CVE-2022-31111 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-2022-31111 affect?

CVE-2022-31111 affects frontier. Severity is medium (CVSS 5.3). Frontier is Substrate's Ethereum compatibility layer. In affected versions the truncation done when converting between EVM balance type and Substrate balance type was incorrectly implemented. This leads to possible discrepancy between appea

How urgent is CVE-2022-31111?

Priority 42/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-45130 HIGH 7.5 UPGRADE Frontier is Substrate's Ethereum compatibility layer
CVE-2023-28431 HIGH 7.5 UPGRADE Frontier is an Ethereum compatibility layer for Substrate
CVE-2022-39242 MEDIUM 5.3 UPGRADE Frontier is an Ethereum compatibility layer for Substrate
CVE-2022-36008 HIGH 7.1 MITIGATE Frontier is Substrate's Ethereum compatibility layer
CVE-2022-21685 MEDIUM 6.5 UPGRADE Frontier is Substrate's Ethereum compatibility layer

References

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