Is CVE-2018-25350 in the CISA KEV catalog?

No. CVE-2018-25350 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-25350?

CVE-2018-25350 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-25350?

CVE-2018-25350 has an EPSS score of 0.43% (35th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2018-25350?

No published fix for CVE-2018-25350 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2018-25350

CRITICAL

9.8

CVSS v3

NVD

Description

userSpice 4.3.24 contains a username enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by sending POST requests to the existingUsernameCheck.php endpoint. Attackers can submit usernames and analyze response text for the 'taken' string to identify existing accounts in the system.

CWE-204

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.43%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-204 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-41697	Medium	5.3	20%	-	-
CVE-2016-9499	Medium	5.3	7.8%	-	Fix
CVE-2019-19030	Medium	5.3	1.9%	-	Fix
CVE-2022-0564	Medium	5.3	1.4%	-	Fix
CVE-2021-20049	High	7.5	1.3%	-	Fix
CVE-2021-39189	Medium	5.3	1.3%	-	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 2026-05-26.