CVE-2025-54427Network attack vector

Contract-execution denial of service via unchecked gas target

Published Jul 28, 2025 · Updated Jul 28, 2025

Incorrect validation in Polkadot EVM Frontier before a754b3d allows attackers to make contract execution unaffordable over the network. The dynamic-fee pallet's check_inherent accepted note_min_gas_price_target values without checking them against current MinGasPrice bounds. Control of a block producer is required; repeated maximum-bound targets continually raise MinGasPrice and inflate transaction fees.

CVSS severity6.9
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect validation in Polkadot EVM Frontier before a754b3d allows attackers to make contract execution unaffordable over the network. The dynamic-fee pallet's check_inherent accepted note_min_gas_price_target values without checking them against current MinGasPrice bounds. Control of a block producer is required; repeated maximum-bound targets continually raise MinGasPrice and inflate transaction fees.

The record

CVE
CVE-2025-54427
Published
Jul 28, 2025
Updated
Jul 28, 2025
Vendor
Parity Technologies
Product
Frontier
Classifications
CWE-754, CWE-682, T1499.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< a754b3d

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Parity Technologies · Frontierversion=< a754b3d

Published CVSS scores

6.9GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
CWE-682Incorrect Calculation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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