PT-2026-28257 · Echatserver · Easy Chat Server

Published 2026-03-28 · Updated 2026-03-28 · CVE-2018-25221

NVD

CVSS v3.1

9.8

Critical

Base vector

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

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.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2018-25221

Affected Products

Easy Chat Server

References · 3

• 🔥 https://exploit-db.com/exploits/44155 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-25221 · Security Note
• https://vulncheck.com/advisories/echat-server-buffer-overflow-via-chat-ghp-username-parameter · Note