What is CVE-2018-25193?

CVE-2018-25193 is a high-severity vulnerability in Cesanta Mongoose Web Server, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2026-03-06.

How severe is CVE-2018-25193?

High severity. CVSS v3 base score is 7.5 out of 10.

RCE in Cesanta Mongoose Web Server

CVE-2018-25193

Mongoose Web Server 6.9 contains a denial of service vulnerability that allows remote attackers to crash the service by establishing multiple socket connections. Attackers can repeatedly create connections to the default port and send malf…

EPSS: 0.001 (35.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cesanta Mongoose Web Server — versions 6.9

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

ExploitDB-45819 (exploit)
VulnCheck Advisory: Mongoose Web Server 6.9 Denial of Service via Socket Connection (third-party-advisory)

Frequently asked questions

What is CVE-2018-25193?: CVE-2018-25193 is a high-severity vulnerability in Cesanta Mongoose Web Server, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2026-03-06.
How severe is CVE-2018-25193?: High severity. CVSS v3 base score is 7.5 out of 10.