How severe is CVE-2018-19830?

CVE-2018-19830 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-19830 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-19830?

CVE-2018-19830 affects Business Alliance Financial Circle Project Business Alliance Financial Circle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-19830?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-19830 published?

CVE-2018-19830 was published on 2019-12-31 and last updated on 2026-06-17.

CVE-2018-19830

CVE-2018-19830 is a high-severity vulnerability in Business Alliance Financial Circle Project Business Alliance Financial Circle with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Business Alliance Financial Circle Project Business Alliance Financial Circle
Published: 2019-12-31
Last modified: 2026-06-17

Description

The UBSexToken() function of a smart contract implementation for Business Alliance Financial Circle (BAFC), an tradable Ethereum ERC20 token, allows attackers to change the owner of the contract, because the function is public (by default) and does not check the caller's identity.

Frequently asked questions

What is CVE-2018-19830?: The UBSexToken() function of a smart contract implementation for Business Alliance Financial Circle (BAFC), an tradable Ethereum ERC20 token, allows attackers to change the owner of the contract, because the function is public (by default) and does not check the caller's identity.
How severe is CVE-2018-19830?: CVE-2018-19830 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-19830 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-19830?: CVE-2018-19830 affects Business Alliance Financial Circle Project Business Alliance Financial Circle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-19830?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-19830 published?: CVE-2018-19830 was published on 2019-12-31 and last updated on 2026-06-17.

References

https://github.com/SmartContractResearcher/SmartContractSecurity/blob/master/New%20Vulnerabilities%20Allow%20Anyone%20to%20Own%20Certain%20ERC20-Based%20Smart%20Contracts%28CVE-2018-19830%2C%20CVE-2018-19831%2C%20CVE-2018-19832%2C%20CVE-2018-19833%2C%20CVE-2018-19834%29/README.md

Affected products (1)

cpe:2.3:a:business_alliance_financial_circle_project:business_alliance_financial_circle:-:*:*:*:*:*:*:*

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