CVE-2026-75348

EIPStackGroup OpENer Buffer Over‑Read in Common Packet Format Parser Causing DoS

Published Oct 9, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
An out-of-bounds read vulnerability exists in EIPStackGroup OpENer v2.3 and master up to commit 76b95cf in the EtherNet/IP TCP SendRRData Common Packet Format parser. The issue occurs in CreateCommonPacketFormatStructure() when it parses recognized optional socket address information items of type 0x8000 or 0x8001 without first validating that the remaining CPF buffer contains the complete fixed sockaddr structure. This allows a remote attacker to cause a denial of service.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title EIPStackGroup OpENer Buffer Over‑Read in Common Packet Format Parser Causing DoS
Type Values Removed Values Added
Title Out‑of‑Bounds Read in OpENer EtherNet/IP Packet Parser Leading to DoS
Weaknesses CWE-788
Type Values Removed Values Added
First Time appeared Eipstackgroup
Eipstackgroup opener
Weaknesses CWE-125
Vendors & Products Eipstackgroup
Eipstackgroup opener
Type Values Removed Values Added
Title Out‑of‑Bounds Read in OpENer EtherNet/IP Packet Parser Leading to DoS
Weaknesses CWE-788
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An out-of-bounds read vulnerability exists in EIPStackGroup OpENer v2.3 and master up to commit 76b95cf in the EtherNet/IP TCP SendRRData Common Packet Format parser. The issue occurs in CreateCommonPacketFormatStructure() when it parses recognized optional socket address information items of type 0x8000 or 0x8001 without first validating that the remaining CPF buffer contains the complete fixed sockaddr structure. This allows a remote attacker to cause a denial of service.
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 9, 2026, 5:52 PM
Reserved
Aug 17, 2026, 12:00 AM
Status
Deferred
Published
Oct 9, 2026, 4:17 PM
Modified
Oct 9, 2026, 6:17 PM