CVE-2018-25221

EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter

Published Mar 28, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:echatserver:easy_chat_server:3.1:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Echatserver easy Chat Server
CPEs cpe:2.3:a:echatserver:easy_chat_server:*:*:*:*:*:*:*:*
Vendors & Products Echatserver easy Chat Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Echatserver
Echatserver echat Server
Vendors & Products Echatserver
Echatserver echat Server
Type Values Removed Values Added
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.
Title EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 1, 2026, 3:19 PM
Reserved
Mar 28, 2026, 11:47 AM
Status
Analyzed
Published
Mar 28, 2026, 12:16 PM
Modified
Jun 17, 2026, 1:55 AM