{"id":"CVE-2018-25221","revision":"2717cb5052ec4e528ea2720d8a0b459d","records":[{"revision":"2717cb5052ec4e528ea2720d8a0b459d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2018-25221","aliases":[],"title":"EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter","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.","state":0,"publishedAt":"2026-03-28T11:58:13.951+00:00","modifiedAt":"2026-10-01T15:19:09.212+00:00","affected":[{"ecosystem":"Vendor product","name":"EChat Server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Echatserver\",\n                    \"product\": \"EChat Server\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://www.exploit-db.com/exploits/44155","https://www.vulncheck.com/advisories/echat-server-buffer-overflow-via-chat-ghp-username-parameter"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2018-25221","license":"CVE Program Terms of Use","key":"cve-program:CVE-2018-25221","identifiers":["CVE-2018-25221"]},"retained":false,"historicalAffected":[]}],"coverage":[]}