---
id: "CVE-2026-120778"
page: "https://infrastack.ai/live/CVE-2026-120778"
kind: "vulnerability"
aliases: ["CVE-2026-120778"]
title: ".NET Aspire: temp file in insecure directory lets local users gain privileges"
severity: "high"
cvss: 7.3
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["aspire", "dotnet", "linux", "runtime", "windows"]
not_affected_if: ["single-user-machine"]
published_at: "2026-11-10T19:20:26+00:00"
first_seen_at: "2026-11-10T19:25:07+00:00"
updated_at: "2026-11-10T19:47:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-120778", "first_seen_at": "2026-11-10T19:25:07+00:00"}]
exploit_sources: []
---

# .NET Aspire: temp file in insecure directory lets local users gain privileges

Link for people: https://infrastack.ai/live/CVE-2026-120778 (this .md is for agents)

A temporary file is created in a directory with insecure permissions in .NET Aspire. An authorized local attacker can use this to elevate privileges on the machine.

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

## Timeline

- 2026-11-10T19:25:07+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-120778

## From the sources

Creation of temporary file in directory with insecure permissions in .NET Aspire allows an authorized attacker to elevate privileges locally.

---

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