CVE-2026-75351 Denial of service in n/a
A remote attacker can cause a denial of service in OpENer via an out-of-bounds read in the EtherNet/IP connection-path parser.
- 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-2026-75351?
CVE-2026-75351 is a high-severity denial of service 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
OpENer v2.3/commit 76b95cf, contains an out-of-bounds read in the server-side EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker to cause a denial of service.
Weakness: CWE-125
Which versions are affected by CVE-2026-75351?
How do I fix CVE-2026-75351?
No fix has been published for CVE-2026-75351 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-75351 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75351 exists.
Sources
Also known as GHSA-h7x2-h7jp-5m95.