{"id":"CVE-2023-4491","aliases":["EUVD-2023-54346","GHSA-5wvp-xjf2-pj96"],"status":"published","title":"Easy Address Book Web Server Buffer overflow vulnerability","description":"Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST 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":"2026-11-10","score":0.00984,"percentile":0.62626,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2023-10-04T12:17:20Z","modified":"2026-06-17T06:37:56Z","products":[{"vendor":"easy_address_book_web_server_project","product":"easy_address_book_web_server"},{"vendor":"efs software","product":"easy address book web server"},{"vendor":"efs_software","product":"easy_address_book_web_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-2023-4491"},{"url":"https://github.com/advisories/GHSA-5wvp-xjf2-pj96"}],"sources":{"cve":[{"id":"CVE-2023-4491","title":"Easy Address Book Web Server Buffer overflow vulnerability","description":"Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T12:17:20.208Z","modified":"2024-09-05T18:11:41.806Z","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":"2026-11-02T14:35:30.116696Z"}],"euvd":[{"id":"EUVD-2023-54346","description":"Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T12:17:20Z","modified":"2024-09-05T18:11:41Z","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-5wvp-xjf2-pj96","title":"Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of...","description":"Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T15:30:32Z","modified":"2024-04-04T08:16:42Z","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-2023-4491","description":"Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.","status":"published","published":"2023-10-04T13:15:25.823Z","modified":"2026-06-17T06:37:56.793Z","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"}]}}