Medium severity · published Mar 22, 2026
CVE-2019-25591
DNSS Domain Name Search Software 2.1.8 Denial of Service
6.2
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DD
DNSS Domain Name Search Software · nsauditor
2.1.8 · source: vendor
Affected product
DD
DNSS Domain Name Search Software
nsauditor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-25591
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-25591
www.nsauditor.com
http://www.nsauditor.com/downloads/dnss_setup.exe
www.exploit-db.com
https://www.exploit-db.com/exploits/46831
www.vulncheck.com
https://www.vulncheck.com/advisories/dnss-domain-name-search-software-denial-of-service