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CVE-2024-43366

24
FAUCET Score

CVE-2024-43366 is a critical vulnerability affecting zkvyper, a Vyper compiler, specifically versions 1.3.12 through 1.5.2. The flaw stems from the LLL IR's lack of Turing-incompleteness restrictions, leading to an improperly compiled loop that could result in loss of funds or other unintended behavior if the loop body contains specific conditions. With a CVSS score of 9.1 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and high impact on integrity and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.3.12, < 1.5.3CPE matchmatch criteria
cpe:2.3:a:matter-labs:zkvyper:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 19th percentile among its peer group of 36,835 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

Remediation records are not available for this CVE.

References

github.com / matter-labs/era-compiler-vyper/security/advisories/GHSA-8j77-7rrv-6pxx
ExploitThird Party Advisory