CVE-2026-51537

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.

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Produits concernés

• Opener project opener

Scores CVSS

Faiblesses (CWE)

• CWE-125

Références

• https://gist.github.com/MrAlaskan/a5fb0fb7765c9df80d28220ed558f04e Third Party Advisory
• https://github.com/EIPStackGroup/OpENer/issues/564 ExploitIssue TrackingVendor Advisory
• https://github.com/EIPStackGroup/OpENer/issues/564 ExploitIssue TrackingVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories