CVE-2018-13326
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe transfer and transferFrom functions of a smart contract implementation for Bittelux (BTX), an Ethereum token, have an integer overflow. NOTE: this has been disputed by a third party.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceInteger overflow vulnerability in the transfer and transferFrom functions of the Bittelux (BTX) Ethereum token smart contract. The lack of proper bounds checking on arithmetic operations allows token amounts to overflow, potentially enabling attackers to manipulate token balances or transfer unauthorized amounts.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE dataall versionsCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm BTX token presenceCheck your Ethereum wallet or blockchain explorer for any Bittelux (BTX) token balances or token transfers in your transaction historyAffected if You hold or have ever interacted with the Bittelux (BTX) token
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Locate the deployed BTX contractFind the contract address for Bittelux token by searching for 'Bittelux BTX' on Etherscan or similar blockchain explorer, then view the contract source code or decompiled bytecodeAffected if A Bittelux contract address exists and is accessible on the blockchain
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Inspect transfer function for SafeMath usageIn the contract source code, locate the transfer function and search for 'SafeMath' or 'require' statements that check for integer overflow/underflow on arithmetic operations involving token amountsAffected if The transfer function performs arithmetic (e.g., balances[msg.sender] - _value) without using SafeMath library or explicit overflow checks
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Inspect transferFrom function for SafeMath usageIn the contract source code, locate the transferFrom function and similarly verify whether arithmetic operations on _value or balances use SafeMath or have explicit overflow/underflow validationAffected if The transferFrom function performs arithmetic without SafeMath or explicit overflow checks
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Check for unchecked arithmetic operationsSearch the contract code for direct subtraction or addition operations on balances (e.g., balances[_from] -= _value) that are not wrapped in SafeMath functions or require statements with overflow validationAffected if Any arithmetic operations on token balances lack overflow/underflow protection
You are affected if you hold or interact with the Bittelux (BTX) token and the deployed contract's transfer or transferFrom functions lack SafeMath library usage or explicit overflow/underflow checks on arithmetic operations
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement SafeMath library functions or add explicit overflow/underflow checks on all arithmetic operations in transfer functions. Consider upgrading to a audited token contract with proper integer handling.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-13326 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-13326 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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