Out-of-bounds read in OpENer SetAttributeList allows denial of service
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
OpENer v2.3 and master through commit 76b95cf are affected. An out-of-bounds read (CWE-125) in the server-side CIP SetAttributeList service lets the software read memory outside its intended bounds. A remote unauthenticated attacker can cause a denial of service.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for OpENer.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Vendor assessments
Timeline
- 2026-10-09 Threatist record created from CVE-2026-75346
- 2026-10-10 Affected versions changed · Red Hat
- 2026-10-10 CVSS score added · Red Hat
- 2026-10-10 Alias added: GHSA-9w4r-w48h-rx76
References
Other 6
- 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
Sources
- CVE-2026-75346 · CVE Program
- CVE-2026-75346 · NVD
- FIRST EPSS
- GHSA-9w4r-w48h-rx76 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-75346 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences