What is CVE-2018-13211?

CVE-2018-13211 is a high-severity vulnerability in Mytokenshr Project, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-07-05.

How severe is CVE-2018-13211?

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

Integer overflow in Mytokenshr Project

CVE-2018-13211

The sell function of a smart contract implementation for MyToken, 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 (61.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.0% 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

Mytokenshr Project

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2018-13211?: CVE-2018-13211 is a high-severity vulnerability in Mytokenshr Project, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-07-05.
How severe is CVE-2018-13211?: High severity. CVSS v3 base score is 7.5 out of 10.