Quick answers
- Is CVE-2026-75353 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75353 being exploited in the wild.
- How severe is CVE-2026-75353?
- Informational severity, published 9 October 2026.
- Which products and versions are affected?
- EIPStackGroup OpENer v2.3 and commit 76b95cf.
- Is there a fix for CVE-2026-75353?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-75353 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-75353?
- Check whether you run EIPStackGroup OpENer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an out-of-bounds read in the server-side EtherNet/IP ForwardOpen ParseConnectionPath() function caused by insufficient validation of the Simple Data segment length against the remaining path buffer. This causes the remaining_path counter to underflow, leading to an out-of-bounds read in GetPathSegmentType(). A remote attacker can exploit this over the network by sending a crafted ForwardOpen message to trigger the condition and cause a denial of service.
Affected products
- EIPStackGroup OpENer v2.3 and commit 76b95cf
Timeline
- 2026-10-09: disclosed