How severe is CVE-2024-34026?

CVE-2024-34026 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-34026 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-34026?

CVE-2024-34026 affects Openplcproject Openplc V3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-34026?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-34026 have an EU (EUVD) identifier?

Yes. CVE-2024-34026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-34597.

When was CVE-2024-34026 published?

CVE-2024-34026 was published on 2024-09-18 and last updated on 2026-06-17.

CVE-2024-34026

CVE-2024-34026 is a critical-severity vulnerability in Openplcproject Openplc V3 Firmware with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-34597
Weakness: CWE-787
Affected product: Openplcproject Openplc V3 Firmware
Published: 2024-09-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-34026?: 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.
How severe is CVE-2024-34026?: CVE-2024-34026 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-34026 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-34026?: CVE-2024-34026 affects Openplcproject Openplc V3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-34026?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-34026 have an EU (EUVD) identifier?: Yes. CVE-2024-34026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-34597.
When was CVE-2024-34026 published?: CVE-2024-34026 was published on 2024-09-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:openplcproject:openplc_v3_firmware:2024-04-04:*:*:*:*:*:*:*

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