What is CVE-2018-12511?

CVE-2018-12511 is a high-severity vulnerability in Substratum, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-09-21.

How severe is CVE-2018-12511?

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

Integer overflow in Substratum

CVE-2018-12511

In the mintToken function of a smart contract implementation for Substratum (SUB), an Ethereum ERC20 token, the administrator can control mintedAmount, leverage an integer overflow, and modify a user account's balance arbitrarily.

Vulnerability class: Integer Overflow

Published 2018-09-21 · 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: 0.009 (59.1th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Substratum

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/n0pn0pn0p/smart_contract_-vulnerability/blob/master/PolyAi.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-12511?: CVE-2018-12511 is a high-severity vulnerability in Substratum, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-09-21.
How severe is CVE-2018-12511?: High severity. CVSS v3 base score is 7.5 out of 10.