An issue in the NetStaX EtherNet/IP Stack prior to v5.6.1 could allow a large Class 3 explicit-message request to exceed the application-side receive buffer without generating an error or warning. The result could be memory corruption, a device crash, or a potential remote attack vector without the originating device receiving a CIP error indicating that the request could not be processed.
History

Fri, 04 Sep 2026 21:30:00 +0000


Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
Description An issue in the NetStaX EtherNet/IP Stack prior to v5.6.1 could allow a large Class 3 explicit-message request to exceed the application-side receive buffer without generating an error or warning. The result could be memory corruption, a device crash, or a potential remote attack vector without the originating device receiving a CIP error indicating that the request could not be processed.
Title Stack-based Buffer Overflow in Pyramid Solutions NetStaX EtherNet/IP Stack
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published: 2026-09-01T15:01:49.064Z

Updated: 2026-09-04T21:05:12.277Z

Reserved: 2026-08-21T22:15:28.774Z

Link: CVE-2026-78012

cve-icon Vulnrichment

Updated: 2026-09-01T15:30:10.495Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-01T15:17:28.013

Modified: 2026-09-08T15:28:33.090

Link: CVE-2026-78012

cve-icon Redhat

No data.