CVE-2026-51537

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Summary

CVECVE-2026-51537
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-13 22:16:47 UTC
Updated2026-07-13 22:16:47 UTC
DescriptionEIPStackGroup 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.

Risk And Classification

Problem Types: n/a

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
github.com/EIPStackGroup/OpENer/issues/564 [email protected] github.com
gist.github.com/MrAlaskan/a5fb0fb7765c9df80d28220ed558f04e [email protected] gist.github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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