---
id: CVE-2026-112200
title: >-
  Resource exhaustion from unreleased AR and RPC session on RPC requests with
  incorrect endianness
summary: >-
  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
  requ…
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-772
vendor: RT-Labs
product: P-Net
affected:
  - P-Net < 1.0.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:26:04.036293Z'
published: '2026-10-29'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:26:14.007Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112200'
references:
  - url: 'https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf'
    label: Cybersecurity advisory for P-Net
tags:
  - cve.org
epss: 0.00414
epssPercentile: 0.35982
ingestedAt: '2026-11-01T20:00:16.985Z'
---

## Overview

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.

## Affected

- `P-Net < 1.0.3`

## Remediation

Upgrade to P-Net 1.0.3 or later.