What is CVE-2018-13231?

CVE-2018-13231 is a high-severity vulnerability in Entertoken Project, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-07-05.

How severe is CVE-2018-13231?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Entertoken Project

CVE-2018-13231

The sell function of a smart contract implementation for ENTER (ENTR) (Contract Name: EnterToken), an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.

Vulnerability class: Integer Overflow

Published 2018-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.5th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Entertoken Project

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/BlockChainsSecurity/EtherTokens/tree/master/EnterToken (Third Party Advisory)
github.com/BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sell integ… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-13231?: CVE-2018-13231 is a high-severity vulnerability in Entertoken Project, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-07-05.
How severe is CVE-2018-13231?: High severity. CVSS v3 base score is 7.5 out of 10.