CVE-2026-51540 Details
Description
OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages (SendUnitData).
A memory corruption vulnerability has been identified in EIPStackGroup OpENer version 2.3.0, up to commit 76b95cf. The issue arises from an integer underflow in the handling of connected explicit messages, specifically within the 'SendUnitData' requests. This vulnerability allows for out-of-bounds memory access, potentially leading to a stack buffer overflow.
Users can update to the latest version of OpENer, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/EIPStackGroup/OpENer/issues/568 | CISA-ADP | ExploitIssue TrackingVendor Advisory |
| https://gist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8da | [email protected] | Third Party Advisory |
| https://github.com/EIPStackGroup/OpENer/issues/568 | [email protected] | ExploitIssue TrackingVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-191 | Integer Underflow (Wrap or Wraparound) | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| opener project opener | 2.3.0 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 11, 2026 | Initial Analysis | [email protected] |
| Jul 14, 2026 | CVE Modified | CISA-ADP |
| Jul 13, 2026 | New CVE Received | [email protected] |