---
id: CVE-1999-1239
title: >-
  HP-UX 9.x does not properly enable the Xauthority mechanism in certain
  conditions, which could allow local users to access the X display even when
  they have not explicitly been authorized to do so.
summary: >-
  HP-UX 9.x does not properly enable the Xauthority mechanism in certain
  conditions, which could allow local users to access the X display even when
  they have not explicitly been authorized to do so.
severity: medium
cvss: 4.6
cvssVector: 'AV:L/AC:L/Au:N/C:P/I:P/A:P'
published: '1994-07-13'
updated: '2026-06-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-1999-1239'
references:
  - url: 'http://www.securityfocus.com/advisories/1559'
    label: cve@mitre.org
  - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/2261'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/advisories/1559'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/2261'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00489
epssPercentile: 0.39618
ingestedAt: '2026-06-19T03:39:00.736Z'
---

## Overview

HP-UX 9.x does not properly enable the Xauthority mechanism in certain conditions, which could allow local users to access the X display even when they have not explicitly been authorized to do so.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.