CVE-2018-25235

MEDIUM 6.2

NetworkActiv Web Server 4.0 Username Field Buffer Overflow DoS

CVSS Score

6.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-787
Vendor	networkactiv
Product	networkactiv web server
Published	Mar 30, 2026
Last Updated	Mar 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Networkactiv / NetworkActiv Web Server

4.0 Pre-Alpha-3.7.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/45302 networkactiv.com: https://www.networkactiv.com/WebServer.html networkactiv.com: https://www.networkactiv.com/Dev/ vulncheck.com: https://www.vulncheck.com/advisories/networkactiv-web-server-username-field-buffer-overflow-dos

Credits

Victor Mondragón