How severe is CVE-2024-39589?

CVE-2024-39589 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-39589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39589?

CVE-2024-39589 affects Openplcproject Openplc V3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-39589?

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

Does CVE-2024-39589 have an EU (EUVD) identifier?

Yes. CVE-2024-39589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38109.

When was CVE-2024-39589 published?

CVE-2024-39589 was published on 2024-09-18 and last updated on 2026-06-17.

CVE-2024-39589

CVE-2024-39589 is a high-severity vulnerability in Openplcproject Openplc V3 Firmware with a CVSS 3.x base score of 7.5. 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-704.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38109
Weakness: CWE-704
Affected product: Openplcproject Openplc V3 Firmware
Published: 2024-09-18
Last modified: 2026-06-17

Description

Multiple invalid pointer dereference vulnerabilities exist in the OpenPLC Runtime EtherNet/IP parser functionality of OpenPLC_v3 16bf8bac1a36d95b73e7b8722d0edb8b9c5bb56a. A specially crafted EtherNet/IP request can lead to denial of service. An attacker can send a series of EtherNet/IP requests to trigger these vulnerabilities.This instance of the vulnerability occurs within the `Protected_Logical_Read_Reply` function

Frequently asked questions

What is CVE-2024-39589?: Multiple invalid pointer dereference vulnerabilities exist in the OpenPLC Runtime EtherNet/IP parser functionality of OpenPLC_v3 16bf8bac1a36d95b73e7b8722d0edb8b9c5bb56a. A specially crafted EtherNet/IP request can lead to denial of service. An attacker can send a series of EtherNet/IP requests to trigger these vulnerabilities.This instance of the vulnerability occurs within the `Protected_Logical_Read_Reply` function
How severe is CVE-2024-39589?: CVE-2024-39589 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-39589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39589?: CVE-2024-39589 affects Openplcproject Openplc V3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-39589?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-39589 have an EU (EUVD) identifier?: Yes. CVE-2024-39589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38109.
When was CVE-2024-39589 published?: CVE-2024-39589 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:2024-05-28:*:*:*:*:*:*:*

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