CVE-2018-25235: Networkactiv Web Server

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

NetworkActiv Web Server 4.0 contains a buffer overflow vulnerability in the username field of the Security options that allows local attackers to crash the application by supplying an excessively long string. Attackers can trigger a denial of service by entering a crafted username value exceeding the expected buffer size through the Set username interface.

Affected products

• Networkactiv Web Server: before 4.0 (fixed in 4.0)

Published 2026-03-30. Last modified 2026-06-17.