CVE-2018-13203
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token,...
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.
- Record
CVE-2018-13203- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-190
- Updated
- 2026-11-02
CVE List No score
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.
- Record
CVE-2018-13203- Updated
- 2026-11-02
EUVDEUVD-2018-5152 No score
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.
- Record
EUVD-2018-5152- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6rxm-gch3-5qgh
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token,...
The sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.
- Record
GHSA-6rxm-gch3-5qgh- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-190
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-13203 is a high vulnerability (CVSS 7.5) in Airswaptoken Project Airswaptoken, published July 5, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.01%, the 63rd percentile. No source names a fixed version.