What is CVE-2021-34270?

CVE-2021-34270 is a high-severity vulnerability in Doft Doftcoin, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2021-08-03.

How severe is CVE-2021-34270?

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

Is CVE-2021-34270 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Integer overflow in Doft Doftcoin

CVE-2021-34270

An integer overflow in the mintToken function of a smart contract implementation for Doftcoin Token, an Ethereum ERC20 token, allows the owner to cause unexpected financial losses.

Vulnerability class: Integer Overflow

Published 2021-08-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Doft Doftcoin

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

Public proof-of-concept exploits

References

github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/Doftcoin.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-34270?: CVE-2021-34270 is a high-severity vulnerability in Doft Doftcoin, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2021-08-03.
How severe is CVE-2021-34270?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-34270 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.