CVEvulnerability

CVE-2026-51537

9.1 CRITICAL Published 2026-07-13 Modified 2026-08-11 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

EIPStackGroup OpENer 2.3.0 (commit 76b95cf) has an out-of-bounds read issue in Connection Manager handling of ForwardOpen requests when processing short malformed packets. An attacker can send a valid ENIP outer frame carrying a malformed CIP ForwardOpen/LargeForwardOpen request, causing the parser to continue reading fields even when request data is insufficient. This issue is remotely triggerable via network traffic and does not require authentication.

Affected configurations

• opener project opener 2.3.0

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References