CVE-2019-25591
CVE-2019-25591 is a medium-severity vulnerability with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Medium (CVSS 3.x base score 6.2)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2019-19924
- Weakness: CWE-787
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2019-25591?
- 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.
- How severe is CVE-2019-25591?
- CVE-2019-25591 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-25591 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2019-25591?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2019-25591 have an EU (EUVD) identifier?
- Yes. CVE-2019-25591 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19924.
- When was CVE-2019-25591 published?
- CVE-2019-25591 was published on 2026-03-22 and last updated on 2026-06-17.
References
- http://www.nsauditor.com/downloads/dnss_setup.exe
- https://www.exploit-db.com/exploits/46831
- https://www.vulncheck.com/advisories/dnss-domain-name-search-software-denial-of-service
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