HOMEVULNERABILITIESCVE-2023-32058
HIGH

CVE-2023-32058

CWE-190Published: May 11, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, due to missing overflow check for loop variables, by assigning the iterator of a loop to a variable, it is possible to overflow the type of the latter. The issue seems to happen only in loops of type `for i in range(a, a + N)` as in loops of type `for i in range(start, stop)` and `for i in range(stop)`, the compiler is able to raise a `TypeMismatch` when trying to overflow the variable. The problem has been patched in version 0.3.8.

NVD Source

Technical Analysis

CVE-2023-32058 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.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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/3de1415ee77a9244eb04bdb695e249d3ec9ed868
PATCHhttps://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868
ADVISORYhttps://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgj
ADVISORYhttps://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgj

All References (4)

→
https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868Patch
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgjExploit · Vendor Advisory
→
https://github.com/vyperlang/vyper/commit/3de1415ee77a9244eb04bdb695e249d3ec9ed868Patch
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgjExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2023-32058
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-190
CISA KEVNo
Affected1 vendor(s)
PublishedMay 11, 2023

Related CVEs (CWE-190)

CVE-2012-5143
10.0
CVE-2012-5835
10.0
CVE-2013-2555
10.0
CVE-2010-1233
10.0
CVE-2010-3254
10.0
CVE-2015-5108
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-32058 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.
← All Vulnerabilities·Search for CVE-2023-32058·NVD