Quick answers
- Is CVE-2026-75351 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75351 being exploited in the wild.
- How severe is CVE-2026-75351?
- High severity, with a CVSS score of 7.5, published 9 October 2026.
- Which products and versions are affected?
- EIPStackGroup OpENer v2.3 and master branch up to commit 76b95cf.
- Is there a fix for CVE-2026-75351?
- 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-2026-75351 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-75351?
- 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 ParseConnectionPath() where the parser advances the message pointer by the actual segment encoding width but decrements the remaining_path counter by the decoded value size heuristic, causing desynchronization. A remote attacker can craft a ForwardOpen message with 32-bit logical class/instance/connection-point segments to trigger reading past the end of the TCP receive buffer, reliably crashing the server process.
Affected products
- EIPStackGroup OpENer v2.3 and master branch up to commit 76b95cf
Timeline
- 2026-05-28: disclosed
- 2026-10-09: advisory