echatserver 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
一般的な弱点パターンには vendor risk memory corruption and バッファオーバーフロー があり、vendor surface production workloads and vendor surface software deployment の利用場面で vendor impact memory corruption and アプリケーションクラッシュ などのリスクが生じる可能性があります。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2018-25221 | 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. | [email protected] | 9.3 | 0.16% | 2026-03-28 | 2026-04-02 |
| CVE-2019-25613 | Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the application by sending oversized data in the message parameter. Attackers can establish a session via the chat.ghp endpoint and then send a POST request to body2.ghp with an excessively large message parameter value to cause the service to crash. | [email protected] | 8.7 | 0.39% | 2026-03-22 | 2026-04-02 |
| CVE-2022-44939 | Efs Software Easy Chat Server Version 3.1 was discovered to contain a DLL hijacking vulnerability via the component TextShaping.dll. This vulnerability allows attackers to execute arbitrary code via a crafted DLL. | [email protected] | 7.8 | 0.08% | 2023-01-06 | 2025-04-09 |
| CVE-2019-20502 | An issue was discovered in EFS Easy Chat Server 3.1. There is a buffer overflow via a long body2.ghp message parameter. | [email protected] | 7.5 | 0.49% | 2020-03-05 | 2024-11-21 |
| CVE-2017-9557 | register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to discover passwords by sending the username parameter in conjunction with an empty password parameter, and reading the HTML source code of the response. | [email protected] | 7.5 | 0.30% | 2017-06-12 | 2026-05-13 |
| CVE-2017-9544 | There is a remote stack-based buffer overflow (SEH) in register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1. By sending an overly long username string to registresult.htm for registering the user, an attacker may be able to execute arbitrary code. | [email protected] | 9.8 | 79.59% | 2017-06-12 | 2026-05-13 |
| CVE-2017-9543 | register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to reset arbitrary passwords via a crafted POST request to registresult.htm. | [email protected] | 7.5 | 0.23% | 2017-06-12 | 2026-05-13 |