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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.

PUBLISHED Reserved 2026-03-22 | Published 2026-03-22 | Updated 2026-03-24 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Out-of-bounds Write

Product status

2.1.8
affected

Credits

Victor Mondragón finder

References

www.exploit-db.com/exploits/46831 (ExploitDB-46831) exploit

www.nsauditor.com/downloads/dnss_setup.exe (Product Reference) product

www.vulncheck.com/...-name-search-software-denial-of-service (VulnCheck Advisory: DNSS Domain Name Search Software 2.1.8 Denial of Service) third-party-advisory

cve.org (CVE-2019-25591)

nvd.nist.gov (CVE-2019-25591)

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