Is CVE-2019-25591 actively exploited?

No active exploitation of CVE-2019-25591 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-25591 be exploited remotely?

No. CVE-2019-25591 requires local access to exploit.

What is the CVSS score of CVE-2019-25591?

CVE-2019-25591 has a CVSS score of 6.2 (MEDIUM).

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MEDIUM

CVE-2019-25591

CWE-787Published: March 22, 2026· Updated: Mar 23, 2026

6.2

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.6th

Official 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.

NVD Source

Technical Analysis

CVE-2019-25591 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.2.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.