{"id":"CVE-2023-4494","aliases":["EUVD-2023-54349","GHSA-9qx7-9x6x-94r9"],"status":"published","title":"Easy Chat Server Stack-based buffer overflow vulnerability","description":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00984,"percentile":0.62818,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2023-10-04T12:27:04Z","modified":"2026-06-17T06:37:57Z","products":[{"vendor":"easy_chat_server_project","product":"easy_chat_server"},{"vendor":"efs","product":"easy chat server"},{"vendor":"efs software","product":"easy chat server"},{"vendor":"efs_software","product":"easy_chat_server"}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-efs-software-products","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4494"},{"url":"https://github.com/advisories/GHSA-9qx7-9x6x-94r9"}],"sources":{"cve":[{"id":"CVE-2023-4494","title":"Easy Chat Server Stack-based buffer overflow vulnerability","description":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T12:27:04.981Z","modified":"2024-09-05T18:09:39.518Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:35:30.474787Z"}],"euvd":[{"id":"EUVD-2023-54349","description":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T12:27:04Z","modified":"2024-09-05T18:09:39Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:56:02.678796Z"}],"ghsa":[{"id":"GHSA-9qx7-9x6x-94r9","title":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send...","description":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T15:30:33Z","modified":"2024-04-04T08:16:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:56:57.522724Z"}],"nvd":[{"id":"CVE-2023-4494","description":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T13:15:26.057Z","modified":"2026-06-17T06:37:57.19Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:08:35.022405Z"}]}}