---
id: CVE-2018-25423
title: >-
  Arm Whois 3.11 contains a buffer overflow vulnerability that allows local
  attackers to crash the application by supplying an oversized input string
summary: >-
  Arm Whois 3.11 contains a buffer overflow vulnerability that allows local
  attackers to crash the application by supplying an oversized input string.
  Attackers can paste a malicious buffer of 700 bytes into the IP address or
  domain input …
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-120
published: '2026-05-30'
updated: '2026-07-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-25423'
references:
  - url: 'http://www.armcode.com/'
    label: disclosure@vulncheck.com
  - url: 'http://www.armcode.com/downloads/arm-whois.exe'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/45762'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/arm-whois-denial-of-service-via-buffer-overflow
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.0014
epssPercentile: 0.03702
ingestedAt: '2026-07-23T06:14:18.080Z'
---

## Overview

Arm Whois 3.11 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an oversized input string. Attackers can paste a malicious buffer of 700 bytes into the IP address or domain input field to trigger a denial of service condition.

## Remediation

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