CVE-2018-25221

CRITICAL

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.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 3/28/2026Modified: 4/2/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2018-25221 — EChat Server 3.1 contains a buffer overflow vulnerability in the chat.ghp endpoi...

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.

CVE-2018-25221
NIST NVD

References (2)

https://www.exploit-db.com/exploits/44155Exploithttps://www.vulncheck.com/advisories/echat-server-buffer-overflow-via-chat-ghp-username-parameterThird Party Advisory