CVE-2018-25221 - CVE House
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Status published Critical CVE-2018-25221

EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter

Vulnerability Description

EChat Server 3.1 contains a buffer overflow vulnerability in the chat.ghp endpoint that allows remote attackers to execute arbitrary code by supplying an oversized username parameter. Attackers can send a GET request to chat.ghp with a malicious username value containing shellcode and ROP gadgets to achieve code execution in the application context.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Juan Sacco <jsacco@exploitpack.com>

Affected Vendor

Echatserver

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Affected Software

EChat Server
Vulnerable Versions:
3.1

Timeline

Official Publish: March 28th, 2026
Last Modified: March 30th, 2026
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)