---
id: CVE-1999-0103
title: >-
  Echo and chargen, or other combinations of UDP services, can be used in tandem
  to flood the server, a.k.a
summary: >-
  Echo and chargen, or other combinations of UDP services, can be used in tandem
  to flood the server, a.k.a. UDP bomb or UDP packet storm.
severity: medium
cvss: 5
cvssVector: 'AV:N/AC:L/Au:N/C:N/I:N/A:P'
published: '1996-02-08'
updated: '2026-06-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-1999-0103'
references:
  - url: 'https://ics-cert.us-cert.gov/advisories/ICSMA-18-233-01'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/bid/80171'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ics-cert.us-cert.gov/advisories/ICSMA-18-233-01'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.14515
epssPercentile: 0.96478
ingestedAt: '2026-06-22T15:59:08.060Z'
exploits:
  metasploit:
    - auxiliary/scanner/chargen/chargen_probe
  checkedAt: '2026-09-23T07:13:14.405Z'
exploitAvailable: true
---

## Overview

Echo and chargen, or other combinations of UDP services, can be used in tandem to flood the server, a.k.a. UDP bomb or UDP packet storm.

## Remediation

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