---
id: CVE-1999-0180
title: in.rshd allows users to login with a NULL username and execute commands.
summary: in.rshd allows users to login with a NULL username and execute commands.
severity: high
cvss: 7.5
cvssVector: 'AV:N/AC:L/Au:N/C:P/I:P/A:P'
published: '1997-01-01'
updated: '2026-06-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-1999-0180'
references:
  - url: 'https://www.cve.org/CVERecord?id=CVE-1999-0180'
    label: cve@mitre.org
  - url: 'https://www.cve.org/CVERecord?id=CVE-1999-0180'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02066
epssPercentile: 0.80544
ingestedAt: '2026-06-22T15:59:08.159Z'
---

## Overview

in.rshd allows users to login with a NULL username and execute commands.

## Remediation

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