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    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.

    Published:Mar 28, 2026
    Last Modified:Apr 3, 2026
    EPS:Mar 28, 2026
    EPSS Score:0.00207
    CVSS Score:9.8

    Affected Products

    Vendor
    Echatserver
    Product
    Easy Chat Server
    Vendor
    Echatserver
    Product
    Echat Server

    Exploits

    https://www.exploit-db.com/exploits/44155

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2019-25613 (CVSS 8.7) — Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the appl…
    CVE-2022-44939 (CVSS 7.8) — Efs Software Easy Chat Server Version 3.1 was discovered to contain a DLL hijacking vulnerability via the comp…
    CVE-2019-20502 (CVSS 7.5) — An issue was discovered in EFS Easy Chat Server 3.1. There is a buffer overflow via a long body2.ghp message p…
    CVE-2017-9557 (CVSS 7.5) — register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to discover password…
    CVE-2017-9543 (CVSS 7.5) — register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to reset arbitrary p…
    CVE-2017-9544 (CVSS 9.8) — There is a remote stack-based buffer overflow (SEH) in register.ghp in EFS Software Easy Chat Server versions …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High