How severe is CVE-2020-19766?

CVE-2020-19766 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-19766 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-19766?

CVE-2020-19766 affects Tokenerc20 Project Tokenerc20. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-19766?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-19766 published?

CVE-2020-19766 was published on 2021-09-07 and last updated on 2026-06-17.

CVE-2020-19766

CVE-2020-19766 is a high-severity vulnerability in Tokenerc20 Project Tokenerc20 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-754.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-754
Affected product: Tokenerc20 Project Tokenerc20
Published: 2021-09-07
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-19766?: CVE-2020-19766 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-19766 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-19766?: CVE-2020-19766 affects Tokenerc20 Project Tokenerc20. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-19766?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-19766 published?: CVE-2020-19766 was published on 2021-09-07 and last updated on 2026-06-17.

References

https://github.com/OSUPlayer/CVEs/blob/master/Reentrancy/2019-07-09-02.md

Affected products (1)

cpe:2.3:a:tokenerc20_project:tokenerc20:1.0:*:*:*:*:*:*:*

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