Is CVE-2018-25235 in the CISA KEV catalog?

No. CVE-2018-25235 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-25235?

CVE-2018-25235 has a CVSS v3 base score of 6.2 (MEDIUM).

What is the EPSS score for CVE-2018-25235?

CVE-2018-25235 has an EPSS score of 0.22% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-25235?

Upgrade web server to 4.0 or later.

CVE & CISA-KEV Catalog

CVE-2018-25235

MEDIUM

6.2

CVSS v3

NVD

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.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

web serverNVD

Affected:< 4.0Fixed in:4.0CVE-2018-25235derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.22%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Exploit1

exploit-db.com

Third-Party Advisory1

vulncheck.com

Product2

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-08.