What is CVE-2020-19766?

CVE-2020-19766 is a high-severity vulnerability in Tokenerc20 Project, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2021-09-07.

How severe is CVE-2020-19766?

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

Vulnerability in Tokenerc20 Project

CVE-2020-19766

The time check operation of PepeAuctionSale 1.0 can be rendered ineffective by assigning a large number to the _duration variable, compromising access control to the application.

Published 2021-09-07 · 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: 0.009 (59.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% 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

Tokenerc20 Project — versions 1.0

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

github.com/OSUPlayer/CVEs/blob/master/Reentrancy/2019-07-09-02.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-19766?: CVE-2020-19766 is a high-severity vulnerability in Tokenerc20 Project, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2021-09-07.
How severe is CVE-2020-19766?: High severity. CVSS v3 base score is 7.5 out of 10.