Is CVE-2024-34026 actively exploited?

No active exploitation of CVE-2024-34026 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-34026 be exploited remotely?

Yes. CVE-2024-34026 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-34026?

CVE-2024-34026 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2024-34026

CRITICAL

CVE-2024-34026

CWE-121Published: September 18, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A stack-based buffer overflow vulnerability exists in the OpenPLC Runtime EtherNet/IP parser functionality of OpenPLC _v3 b4702061dc14d1024856f71b4543298d77007b88. A specially crafted EtherNet/IP request can lead to remote code execution. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.

NVD Source

Risk Analysis

OpenPLC Runtime contains a stack-based buffer overflow in its EtherNet/IP parser, which can lead to remote code execution. This critical vulnerability has a CVSS score of 9.8 and allows an attacker to trigger the flaw by sending crafted requests.

No public exploit is known, and it is not in the CISA KEV catalog. It is remotely exploitable with low attack complexity.

Recommended Action

Update the OpenPLC firmware to a version that addresses this buffer overflow. Restrict network access to the EtherNet/IP interface.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2024-34026 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.