EIPStackGroup OpENer v2.3.0/master up to commit 76b95cf contains an out-of-bounds read vulnerability in Connection Manager request parsing. This allows a remote attacker to cause a denial of service.

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CVE-2026-75349 · Microsoft / collected KEV context

cve-program · CVE-2026-75349

• https://github.com/EIPStackGroup/OpENer
• https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipmessagerouter.c
• https://github.com/EIPStackGroup/OpENer/issues/577
• https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipconnectionmanager.c
• https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/cpf.c
• https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/encap.c

No related operational record is retained in the current change model.