---
id: CVE-2018-25266
title: Angry IP Scanner 3.5.3 Denial of Service via Preferences Buffer Overflow
summary: >-
  Angry IP Scanner 3.5.3 contains a buffer overflow vulnerability in the
  preferences dialog that allows local attackers to crash the application by
  supplying an excessively large string. Attackers can generate a file
  containing a massive b…
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'
cvssSource: cna
cwe:
  - CWE-787
vendor: Angryip
product: Angry IP Scanner
affected:
  - angry_ip_scanner 3.11
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-04-22T18:31:17.539835Z'
exploitAvailable: true
published: '2026-04-22'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T15:19:14.532Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2018-25266'
references:
  - url: 'https://www.exploit-db.com/exploits/45993'
    label: ExploitDB-45993
  - url: 'https://angryip.org'
    label: Official Product Homepage
  - url: >-
      https://www.vulncheck.com/advisories/angry-ip-scanner-denial-of-service-via-preferences-buffer-overflow
    label: >-
      VulnCheck Advisory: Angry IP Scanner 3.5.3 Denial of Service via
      Preferences Buffer Overflow
tags:
  - cve.org
  - exploit-available
epss: 0.00177
epssPercentile: 0.06577
ingestedAt: '2026-10-01T15:48:17.886Z'
---

## Overview

Angry IP Scanner 3.5.3 contains a buffer overflow vulnerability in the preferences dialog that allows local attackers to crash the application by supplying an excessively large string. Attackers can generate a file containing a massive buffer of repeated characters and paste it into the unavailable value field in the display preferences to trigger a denial of service.

## Affected

- `angry_ip_scanner 3.11`

## Remediation

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