Buffer Overflow Vulnerability in DNSS Domain Name Search Software by NSAUditor
CVE-2019-25591

6.9MEDIUM

Key Information:

Vendor

Nsauditor

Status
Dnss Domain Name Search Software
Vendor
CVE Published:
22 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25591?

The DNSS Domain Name Search Software version 2.1.8 is susceptible to a buffer overflow flaw in its registration code input field. This vulnerability enables local attackers to exploit the application by submitting an excessively long string, leading to a denial of service. By inserting a registration code that contains 300 repeated characters into the Name/Key field through the Register menu option, attackers can cause the application to crash, disrupting service and potentially exposing underlying system vulnerabilities. This highlights the importance of input validation and robust error handling in software development.

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Affected Version(s)

DNSS Domain Name Search Software 2.1.8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-25591 - Proof of Concept

References

https://www.exploit-db.com/exploits/46831
exploit
http://www.nsauditor.com/downloads/dnss_setup.exe
product
https://www.vulncheck.com/advisories/dnss-domain-name-sea...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Victor Mondragón
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