CVE-2018-25221
EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter
- State
- Published
- Severity
- 9.3 Critical
- Published
- Mar 28, 2026
- Updated
- Oct 1, 2026
- Reserved
- Mar 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
EChat ServerEchatserver |
|
References
- ExploitDB-44155exploit
- VulnCheck Advisory: EChat Server 3.1 Buffer Overflow via chat.ghp username Parameterthird-party-advisory
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