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CVE-2018-25235

NetworkActiv Web Server 4.0 Username Field Buffer Overflow DoS

Published: Mar 30, 2026Updated: Apr 8, 2026 Sources: CVE List NVDCWE-787
NVD MITRE
6.2CVSSMEDIUM
EPSS Score
0.2%
Top 87.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-787

Affected Products

NetworkActiv Web ServerNetworkactiv
web servernetworkactiv
networkactivaka networkactiv web server

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.exploit-db.com/exploits/45302
exploit-db.com
https://www.networkactiv.com/WebServer.html
networkactiv.com
https://www.networkactiv.com/Dev/
networkactiv.com
and 1 more references View all →

Timeline

Published
Mar 30, 2026
Last Updated
Apr 8, 2026

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