NetworkActiv Web Server 4.0 Pre-Alpha-3.7.2 Set Username Interface out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in NetworkActiv Web Server 4.0 Pre-Alpha-3.7.2. This affects an unknown part of the component Set Username Interface. The manipulation of the argument Username results in out-of-bounds write. This vulnerability is known as CVE-2018-25235. Attacking locally is a requirement. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in NetworkActiv Web Server 4.0 Pre-Alpha-3.7.2. Affected is an unknown functionality of the component Set Username Interface. The manipulation of the argument username with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

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.

The weakness was published by Victor Mondragón as 45302. The advisory is shared for download at exploit-db.com. This vulnerability is traded as CVE-2018-25235 since 03/30/2026. The exploitability is told to be easy. The attack needs to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (45302) and EUVD (EUVD-2018-21727). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.2
CNA Vector (VulnCheck): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/30/2026 Advisory disclosed
03/30/2026 +0 days CVE reserved
03/30/2026 +0 days VulDB entry created
03/30/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 45302
Researcher: Victor Mondragón
Status: Not defined

CVE: CVE-2018-25235 (🔒)
GCVE (CVE): GCVE-0-2018-25235
GCVE (VulDB): GCVE-100-354180
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/30/2026 15:25
Updated: 03/30/2026 16:12
Changes: 03/30/2026 15:25 (81), 03/30/2026 16:12 (1)
Complete: 🔍
Cache ID: 216:F2F:103

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