CVEvulnerability
CVE-2026-51541
9.1 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-13
- Last modified
- 2026-08-11
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weaknesses
- CWE-125
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.
Affected configurations
• opener project opener 2.3.0
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- https://gist.github.com/MrAlaskan/705c680856e48c535148265c0899ad4b Third Party Advisory
- https://github.com/EIPStackGroup/OpENer/issues/582 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/EIPStackGroup/OpENer/issues/582 Exploit, Issue Tracking, Vendor Advisory