CVE-2026-112200 Resource exhaustion from unreleased AR and RPC session on RPC requests with incorrect endianness
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-112200?
CVE-2026-112200 is a high-severity vulnerability in RT-Labs P-Net, published on 29 Oct 2026.
Official description
P-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. The session and its AR remain allocated, so repeated requests exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.
Weakness: CWE-772
Which versions are affected by CVE-2026-112200?
How do I fix CVE-2026-112200?
No fix has been published for CVE-2026-112200 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-112200 being exploited?
There is no known exploitation of CVE-2026-112200 in the wild and no public exploit code.
Sources
Also known as GHSA-8v8r-4p24-rjmp.