High severity · published Oct 6, 2021
CVE-2021-41121
Vyper is a Pythonic Smart Contract Language for the EVM
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
Vyper is a Pythonic Smart Contract Language for the EVM. In affected versions when performing a function call inside a literal struct, there is a memory corruption issue that occurs because of an incorrect pointer to the the top of the stack. This issue has been resolved in version 0.3.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VY
Vyper · Vyperlang
before 0.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41121
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41121
Patch
https://github.com/vyperlang/vyper/pull/2447
Third Party Advisory
https://github.com/vyperlang/vyper/security/advisories/GHSA-xv8x-pr4h-73jv
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