OpENer 2.3.0 (commit 76b95cf) has an out-of-bounds read issue in CIP message parsing when handling malformed explicit requests with a forged EPath size. An attacker can send a valid ENIP SendRRData frame carrying a very short CIP payload whose path_size field claims that many more path words are present than are actually available. Because the parser trusts the attacker-controlled path_size and continues decoding path segments without a remaining-length boundary, it reads beyond the end of the stack receive buffer.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 13 Jul 2026 23:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Eipstackgroup
Eipstackgroup opener |
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| Vendors & Products |
Eipstackgroup
Eipstackgroup opener |
Mon, 13 Jul 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OpENer 2.3.0 (commit 76b95cf) has an out-of-bounds read issue in CIP message parsing when handling malformed explicit requests with a forged EPath size. An attacker can send a valid ENIP SendRRData frame carrying a very short CIP payload whose path_size field claims that many more path words are present than are actually available. Because the parser trusts the attacker-controlled path_size and continues decoding path segments without a remaining-length boundary, it reads beyond the end of the stack receive buffer. | |
| References |
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Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-07-13T21:35:20.055Z
Reserved: 2026-06-08T00:00:00.000Z
Link: CVE-2026-51541
No data.
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-13T23:30:05Z
Weaknesses
No weakness.