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CVE-2022-24788

31
FAUCET Score

CVE-2022-24788 is a critical buffer overrun vulnerability affecting Vyper, a Pythonic Smart Contract Language for the Ethereum Virtual Machine, specifically in versions prior to 0.3.2. This flaw arises when importing functions from a JSON interface that return 'bytes', leading to bytecode that fails to properly clamp byte lengths. With a CVSS score of 9.8 (CRITICAL), this vulnerability allows for unauthenticated remote exploitation with high impact on confidentiality, integrity, and availability. While there are no known active exploits, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness and potential future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3.2CPE matchmatch criteria
cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 43rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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: 0.3.2

Vendor Advisories (1)

pipGHSA-4mrx-6fxm-8jpghigh

Buffer Overflow in vyper

Apr 20, 2022

References

github.com / vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b
PatchThird Party Advisory
github.com / vyperlang/vyper/security/advisories/GHSA-4mrx-6fxm-8jpg
PatchThird Party Advisory