---
id: CVE-1999-1022
title: >-
  serial_ports administrative program in IRIX 4.x and 5.x trusts the user's PATH
  environmental variable to find and execute the ls program, which allows local
  users to gain root privileges via a Trojan horse ls program.
summary: >-
  serial_ports administrative program in IRIX 4.x and 5.x trusts the user's PATH
  environmental variable to find and execute the ls program, which allows local
  users to gain root privileges via a Trojan horse ls program.
severity: medium
cvss: 6.2
cvssVector: 'AV:L/AC:H/Au:N/C:C/I:C/A:C'
published: '1994-10-02'
updated: '2026-06-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-1999-1022'
references:
  - url: 'http://www.securityfocus.com/archive/1/930'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/bid/464'
    label: cve@mitre.org
  - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/2111'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/archive/1/930'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.securityfocus.com/bid/464'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/2111'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.00793
epssPercentile: 0.54867
ingestedAt: '2026-06-19T03:39:00.742Z'
exploitAvailable: true
exploits:
  exploitdb: true
  checkedAt: '2026-09-24T07:52:44.315Z'
---

## Overview

serial_ports administrative program in IRIX 4.x and 5.x trusts the user's PATH environmental variable to find and execute the ls program, which allows local users to gain root privileges via a Trojan horse ls program.

## Remediation

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