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TI-2024-26520 Aliases CVE-2024-39590GHSA-3cmw-x7g9-558m

Incorrect type conversion in OpenPLC_v3

Priority HIGH 72CWE-704Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-704 and the CVSS impact.

Summary

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_Write_Reply` function

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01021 63rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenPLCOpenPLC_v316bf8bac1a36d95b73e7b8722d0edb8b9c5bb56a—No fix listedCNA
  • OpenPLC_v3 VendorOpenPLC Affected 16bf8bac1a36d95b73e7b8722d0edb8b9c5bb56a Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:openplcproject:openplc_v3_firmware:2024-05-28:*:*:*:*:*:*:*2024-05-28VulnerableOpenPLC
  • cpe:2.3:o:openplcproject:openplc_v3_firmware:2024-05-28:*:*:*:*:*:*:* Versions 2024-05-28 Vulnerable ·OpenPLC

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-39590
  2. 2026-10-03 Alias added: GHSA-3cmw-x7g9-558m

References

Exploit 1

  • TI-2024-22495 Stack-based buffer overflow in OpenPLC_v3 CVSS 3.1CRITICAL 9.8
  • TI-2024-26519 Incorrect type conversion in OpenPLC_v3 CVSS 3.1HIGH 7.5
  • TI-2024-24528 Out-of-bounds read in OpenPLC_v3 CVSS 3.1HIGH 7.5
  • TI-2024-24527 Out-of-bounds read in OpenPLC_v3 CVSS 3.1HIGH 7.5
  • TI-2026-23850 A path injection vulnerability exists in OpenPLC v3… CVSS 3.1MEDIUM 6.5
  • TI-2021-11719 Command Injection in Open PLC Webserver v3 allows remote attackers to execute arbitrary… CVSS 3.1HIGH 8.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences