What is CVE-2018-25235?

CVE-2018-25235 is a medium-severity vulnerability in Networkactiv Web Server, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-03-30.

How severe is CVE-2018-25235?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Networkactiv Web Server

CVE-2018-25235

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…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (4.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Networkactiv Web Server — versions 4.0 Pre-Alpha-3.7.2

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

ExploitDB-45302 (exploit)
Official Product Homepage (product)
Product Reference (product)
VulnCheck Advisory: NetworkActiv Web Server 4.0 Username Field Buffer Overflow DoS (third-party-advisory)

Frequently asked questions

What is CVE-2018-25235?: CVE-2018-25235 is a medium-severity vulnerability in Networkactiv Web Server, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-03-30.
How severe is CVE-2018-25235?: Medium severity. CVSS v3 base score is 6.2 out of 10.