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Vulnerabilities CVE-2026-51537

CVE-2026-51537

None
Open
TLP:CLEAR
NVD CVE.org
Ransomware Critical Infrastructure

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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.

Details

EPSS Score
0.44%

36.6th percentile

Confidence
90%
Published
Jul 13, 2026
Last Modified
Jul 14, 2026
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