CVE-2018-25098Network attack vector

Transaction denial via unauthenticated counter exhaustion

Published Feb 4, 2024 · Updated Aug 5, 2024

Denial of service in Blockmason Credit Protocol allows remote attackers to block legitimate UCAC transactions through public contract calls. The public executeUcacTx function increments a UCAC's transaction counter without performing a transaction, allowing repeated calls to reach its transaction limit. No authentication is required, and an attacker can maintain the exhausted counter indefinitely to prevent that UCAC from processing legitimate transactions.

CVSS severity7.5
High
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Blockmason Credit Protocol allows remote attackers to block legitimate UCAC transactions through public contract calls. The public executeUcacTx function increments a UCAC's transaction counter without performing a transaction, allowing repeated calls to reach its transaction limit. No authentication is required, and an attacker can maintain the exhausted counter indefinitely to prevent that UCAC from processing legitimate transactions.

The record

CVE
CVE-2018-25098
Published
Feb 4, 2024
Updated
Aug 5, 2024
Vendor
Blockmason
Product
Credit Protocol
Classifications
CWE-672, CWE-404, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Blockmason · Credit Protocolversion=n/a

Published CVSS scores

3.3VulDBAV:A/AC:L/Au:N/C:N/I:N/A:P
4.3VulDBCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-672Operation on a Resource after Expiration or Release
CWE-404Improper Resource Shutdown or Release
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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