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CVE-2024-24564

17
FAUCET Score

CVE-2024-24564 is a medium-severity vulnerability affecting Vyper, a Pythonic smart contract language for the Ethereum Virtual Machine, specifically versions prior to 0.4.0. It arises when the built-in extract32(b, start) function is used, and the 'start' index concurrently modifies the byte array 'b', leading to the potential reading of uninitialized or "dirty" memory. The vulnerability has a CVSS score of 5.3 (Medium) with a network attack vector and low impact on confidentiality, but no impact on integrity or availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.0CPE matchmatch criteria
cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 28th percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: vyperFixed in: 0.4.0

Vendor Advisories (1)

pipGHSA-4hwq-4cpm-8vmxlow

Vyper's `extract32` can ready dirty memory

Feb 26, 2024

References

github.com / vyperlang/vyper/commit/3d9c537142fb99b2672f21e2057f5f202cde194f
Patch
github.com / vyperlang/vyper/security/advisories/GHSA-4hwq-4cpm-8vmx
ExploitVendor Advisory