CVE-2019-25591

MEDIUM

DNSS Domain Name Search Software 2.1.8 Denial of Service

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25591. PoCs published by Victor Mondragón.

AI-analyzed exploit summary This PoC exploits a buffer overflow vulnerability in DNSS Domain Name Search Software 2.1.8 by sending a crafted registration code (300 'A' characters) to trigger a denial-of-service (DoS) condition. The exploit writes the payload to a file, which is then manually pasted into the software's registration field to crash it.

Description

DNSS Domain Name Search Software 2.1.8 contains a buffer overflow vulnerability in the registration code input field that allows local attackers to crash the application by submitting an excessively long string. Attackers can trigger a denial of service by pasting a malicious registration code containing 300 repeated characters into the Name/Key field via the Register menu option.

Exploits (1)

exploitdb WORKING POC
by Victor Mondragón · pythondoswindows
https://www.exploit-db.com/exploits/46831

This PoC exploits a buffer overflow vulnerability in DNSS Domain Name Search Software 2.1.8 by sending a crafted registration code (300 'A' characters) to trigger a denial-of-service (DoS) condition. The exploit writes the payload to a file, which is then manually pasted into the software's registration field to crash it.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: DNSS Domain Name Search Software 2.1.8
No auth needed
Prerequisites: Python to generate the payload file · Manual interaction to paste the payload into the software
devstral-2 · analyzed Mar 22, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-46831
https://www.exploit-db.com/exploits/46831
Product product
Product Reference
http://www.nsauditor.com/downloads/dnss_setup.exe
Third Party Advisory third-party-advisory
VulnCheck Advisory: DNSS Domain Name Search Software 2.1.8 Denial of Service
https://www.vulncheck.com/advisories/dnss-domain-name-search-software-denial-of-service

Scores

CVSS v3 6.2
EPSS 0.0018
EPSS Percentile 7.6%
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 (1)
nsauditor/DNSS Domain Name Search Software 2.1.8
Published Mar 22, 2026
Tracked Since Mar 22, 2026