CVE-2026-75347 Use after free in n/a
A remote attacker can cause a denial of service in OpENer via an expired pointer dereference in CPF handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75347?
CVE-2026-75347 is a high-severity use after free vulnerability in n/a, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer dereference vulnerability in the EtherNet/IP Common Packet Format (CPF) handling logic. This allows a remote attacker to cause a denial of service.
Weakness: CWE-400
Which versions are affected by CVE-2026-75347?
How do I fix CVE-2026-75347?
No fix has been published for CVE-2026-75347 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-75347 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75347 exists.
Sources
Also known as GHSA-cmxj-3q64-8hph.