---
id: CVE-1999-1318
title: >-
  /usr/5bin/su in SunOS 4.1.3 and earlier uses a search path that includes the
  current working directory (.), which allows local users to gain privileges via
  Trojan horse programs.
summary: >-
  /usr/5bin/su in SunOS 4.1.3 and earlier uses a search path that includes the
  current working directory (.), which allows local users to gain privileges via
  Trojan horse programs.
severity: high
cvss: 7.2
cvssVector: 'AV:L/AC:L/Au:N/C:C/I:C/A:C'
published: '1993-09-17'
updated: '2026-06-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-1999-1318'
references:
  - url: >-
      http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fpatches%2F100630&zone_32=112193%2A%20
    label: cve@mitre.org
  - url: 'http://www.iss.net/security_center/static/7480.php'
    label: cve@mitre.org
  - url: >-
      http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fpatches%2F100630&zone_32=112193%2A%20
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.iss.net/security_center/static/7480.php'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00331
epssPercentile: 0.26501
ingestedAt: '2026-06-19T03:39:00.721Z'
---

## Overview

/usr/5bin/su in SunOS 4.1.3 and earlier uses a search path that includes the current working directory (.), which allows local users to gain privileges via Trojan horse programs.

## Remediation

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