Is CVE-2024-43366 actively exploited?

No active exploitation of CVE-2024-43366 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-43366 be exploited remotely?

Yes. CVE-2024-43366 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-43366?

CVE-2024-43366 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2024-43366

CWE-835Published: August 15, 2024· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

zkvyper is a Vyper compiler. Starting in version 1.3.12 and prior to version 1.5.3, since LLL IR has no Turing-incompletness restrictions, it is compiled to a loop with a much more late exit condition. It leads to a loss of funds or other unwanted behavior if the loop body contains it. However, more real-life use cases like iterating over an array are not affected. No contracts were affected by this issue, which was fixed in version 1.5.3. Upgrading and redeploying affected contracts is the only way to avoid the vulnerability.

NVD Source

Technical Analysis

CVE-2024-43366 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.