HOMEVULNERABILITIESCVE-2023-32675
MEDIUM

CVE-2023-32675

CWE-670Published: May 19, 2023· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In contracts with more than one regular nonpayable function, it is possible to send funds to the default function, even if the default function is marked `nonpayable`. This applies to contracts compiled with vyper versions prior to 0.3.8. This issue was fixed by the removal of the global `calldatasize` check in commit `02339dfda`. Users are advised to upgrade to version 0.3.8. Users unable to upgrade should avoid use of nonpayable default functions.

NVD Source

Technical Analysis

CVE-2023-32675 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/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

PATCHhttps://github.com/vyperlang/vyper/commit/02339dfda0f3caabad142060d511d10bfe93c520
PATCHhttps://github.com/vyperlang/vyper/security/advisories/GHSA-vxmm-cwh2-q762
PATCHhttps://github.com/vyperlang/vyper/commit/02339dfda0f3caabad142060d511d10bfe93c520
PATCHhttps://github.com/vyperlang/vyper/security/advisories/GHSA-vxmm-cwh2-q762

All References (4)

→
https://github.com/vyperlang/vyper/commit/02339dfda0f3caabad142060d511d10bfe93c520Patch
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-vxmm-cwh2-q762Exploit · Patch · Vendor Advisory
→
https://github.com/vyperlang/vyper/commit/02339dfda0f3caabad142060d511d10bfe93c520Patch
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-vxmm-cwh2-q762Exploit · Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2023-32675
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-670
CISA KEVNo
Affected1 vendor(s)
PublishedMay 19, 2023

Related CVEs (CWE-670)

CVE-2022-21679
9.8
CVE-2022-25745
9.8
CVE-2020-1914
9.8
CVE-2019-17192
9.8
CVE-2020-17466
9.8
CVE-2025-43359
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-32675 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.
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