CVE-2026-75349 Details
Description
EIPStackGroup OpENer v2.3.0/master up to commit 76b95cf contains an out-of-bounds read vulnerability in Connection Manager request parsing. This allows a remote attacker to cause a denial of service.
A vulnerability allowing out-of-bounds read has been identified in EIPStackGroup OpENer version 2.3.0/master prior to commit 76b95cf. This vulnerability arises in the Connection Manager request parsing, where missing validation of the request body length allows remote attackers to craft EtherNet/IP messages that cause a denial-of-service by crashing the server process. The issue is reachable through the EtherNet/IP TCP service, default port 44818.
OpENer users can update to the latest version where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 9, 2026CISA-ADP
Assessed Oct 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/EIPStackGroup/OpENer | [email protected] | Vendor |
| https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipconnectionmanager.c | [email protected] | Source CodeVendor |
| https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipmessagerouter.c | [email protected] | Source CodeVendor |
| https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/cpf.c | [email protected] | Source CodeVendor |
| https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/encap.c | [email protected] | Source CodeVendor |
| https://github.com/EIPStackGroup/OpENer/issues/577 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| EIPStackGroup OpENer | >= 2.3, <= 76b95cf |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 14, 2026 | CVE Modified | CISA-ADP |
| Oct 9, 2026 | New CVE Received | [email protected] |
Volerion