CVE-2018-25266

MEDIUM

Angry IP Scanner 3.5.3 Denial of Service via Preferences Buffer Overflow

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-25266. PoCs published by Fernando Cruz.

AI-analyzed exploit summary This exploit generates a large buffer of 'A' characters (44,455,293 bytes) and writes it to a file. When this file's content is pasted into Angry IP Scanner's preferences, it triggers a denial-of-service (DoS) condition due to buffer overflow.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Fernando Cruz · pythondoswindows
https://www.exploit-db.com/exploits/45993

This exploit generates a large buffer of 'A' characters (44,455,293 bytes) and writes it to a file. When this file's content is pasted into Angry IP Scanner's preferences, it triggers a denial-of-service (DoS) condition due to buffer overflow.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Angry IP Scanner 3.5.3 (tested on 3.11)
No auth needed
Prerequisites: Python to generate the payload file · User interaction to paste the payload into Angry IP Scanner's preferences
devstral-2 · analyzed Apr 22, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-45993
https://www.exploit-db.com/exploits/45993
Product product
Official Product Homepage
https://angryip.org
Third Party Advisory third-party-advisory
VulnCheck Advisory: Angry IP Scanner 3.5.3 Denial of Service via Preferences Buffer Overflow
https://www.vulncheck.com/advisories/angry-ip-scanner-denial-of-service-via-preferences-buffer-overflow

Scores

CVSS v3 6.2
EPSS 0.0018
EPSS Percentile 7.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-787
Status published
Products (2)
Angryip/Angry IP Scanner 3.11
angryip/angry_ip_scanner 3.5.3
Published Apr 22, 2026
Tracked Since Apr 22, 2026