---
id: "CVE-2026-40273"
page: "https://infrastack.ai/live/CVE-2026-40273"
kind: "vulnerability"
aliases: ["CVE-2026-40273"]
title: "QNX Neutrino kernel: crafted local message leaks information from procnto"
severity: "medium"
cvss: 4.0
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["embedded", "infrastructure", "neutrino", "qnx", "runtime"]
not_affected_if: ["no-local-access"]
published_at: "2026-11-10T19:21:15+00:00"
first_seen_at: "2026-11-10T19:25:15+00:00"
updated_at: "2026-11-10T20:04:33+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40273", "first_seen_at": "2026-11-10T19:25:15+00:00"}]
exploit_sources: []
---

# QNX Neutrino kernel: crafted local message leaks information from procnto

Link for people: https://infrastack.ai/live/CVE-2026-40273 (this .md is for agents)

A flaw in the procnto message handler of the QNX Neutrino kernel lets a local attacker send a crafted message that causes information disclosure. The sources describe only information disclosure, not code execution or takeover.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T19:25:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-40273

## From the sources

Improper Input Validation in a procnto message handler could allow an attacker with local access to send a crafted message which can cause an information disclosure in the QNX Neutrino kernel

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_