CVE-2020-37289
Last modified
CVE-2020-37289 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. Vyper before 0.3.1 lacks a uint8 type, allowing interface return values declared as uint8, such as ERC20.decimals(), to be stored in uint256 variables without bounds checking. Malicious contracts can return values greater than 255 to manipulate or bypass contract logic that relies on these values.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
Vyper before 0.3.1 lacks a uint8 type, allowing interface return values declared as uint8, such as ERC20.decimals(), to be stored in uint256 variables without bounds checking. Malicious contracts can return values greater than 255 to manipulate or bypass contract logic that relies on these values.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| vyperlang | vyper | < 0.3.1 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2020-37289?
How severe is CVE-2020-37289?
How do I fix CVE-2020-37289?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-37281Gravitee API Management through 4.12.22 contains an authenti…8.1
- CVE-2020-37282office-converter through 1.0.2 contains an OS command inject…9.8
- CVE-2020-37284Sickbeard through build-507 contains a reflected cross-site …6.1
- CVE-2020-37286Vyper from 0.1.0b4 before 0.3.0 contains a memory corruption…6.5
- CVE-2020-37287Vyper before 0.2.6 contains a call stack corruption vulnerab…5.9
- CVE-2020-37288Vyper from 0.1.0b10 before 0.2.3 generates incorrect code fo…3.7
- CVE-2020-3729Adobe Framemaker versions 2019.0.4 and below have an out-of-…8.8
- CVE-2020-3730Adobe Framemaker versions 2019.0.4 and below have an out-of-…8.8
- CVE-2020-3731Adobe Framemaker versions 2019.0.4 and below have a heap ove…8.8
- CVE-2020-3732Adobe Framemaker versions 2019.0.4 and below have an out-of-…8.8
- CVE-2020-3733Adobe Framemaker versions 2019.0.4 and below have an out-of-…8.8
- CVE-2020-3734Adobe Framemaker versions 2019.0.4 and below have a buffer e…8.8
Are you affected by CVE-2020-37289?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST