CVE-2018-19831: The ToOwner() function of a smart contract implementation for Cryptbond Network (CBN), an tradable Ethereum ER

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HIGH 7.5REMOTEMITIGATE

CVE-2018-19831 is a high-severity flaw (CVSS 7.5) affecting cryptbond network. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ToOwner() function of a smart contract implementation for Cryptbond Network (CBN), an tradable Ethereum ERC20 token, allows attackers to change the owner of the contract, because the function does not check the caller's identity.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-287
Published	2019-12-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cryptbond network project

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

Am I affected?

Timeline

2019-12-31 16:15 UTCPublished CVE record published
2026-06-17 01:49 UTCUpdated Record last modified

cryptbond network project cryptbond network 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 cryptbond-network || rpm -q cryptbond-network || cryptbond-network --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-2018-19831?

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

Is CVE-2018-19831 being exploited?

CVE-2018-19831 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-2018-19831 affect?

CVE-2018-19831 affects cryptbond network. Severity is high (CVSS 7.5). The ToOwner() function of a smart contract implementation for Cryptbond Network (CBN), an tradable Ethereum ERC20 token, allows attackers to change the owner of the contract, because the function does not check the caller's identity.

How urgent is CVE-2018-19831?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

References

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