MEDIUM
CVE-2021-41122
CWE-682Published: October 5, 2021· Updated: Jun 17, 2026
4.3
CVSS v3.1
Official Description
Vyper is a Pythonic Smart Contract Language for the EVM. In affected versions external functions did not properly validate the bounds of decimal arguments. The can lead to logic errors. This issue has been resolved in version 0.3.0.
Technical Analysis
CVE-2021-41122 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected Vendors & Products
vyperlang1 product(s)
vyper
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://github.com/vyperlang/vyper/pull/2447Third Party Advisory
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46Exploit · Third Party Advisory
→
https://github.com/vyperlang/vyper/pull/2447Third Party Advisory
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46Exploit · Third Party Advisory
Quick Facts
CVE IDCVE-2021-41122
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-682
CISA KEVNo
Affected1 vendor(s)
PublishedOct 5, 2021
Related CVEs (CWE-682)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-41122 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.