{"id":"CVE-2023-5748","aliases":["EUVD-2023-58034","GHSA-3744-988x-mqxh"],"status":"published","title":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi...","description":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi component in Synology SSL VPN Client before 1.4.7-0687 allows local users to conduct denial-of-service attacks via unspecified vectors.","severity":{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00212,"percentile":0.11603,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2023-10-24T10:26:59Z","modified":"2026-06-17T06:49:17Z","products":[{"vendor":"synology","product":"ssl_vpn_client"},{"vendor":"synology","product":"synology ssl vpn client"}],"references":[{"url":"https://www.synology.com/en-global/security/advisory/Synology_SA_23_12","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5748"},{"url":"https://github.com/advisories/GHSA-3744-988x-mqxh"}],"sources":{"cve":[{"id":"CVE-2023-5748","description":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi component in Synology SSL VPN Client before 1.4.7-0687 allows local users to conduct denial-of-service attacks via unspecified vectors.","status":"published","published":"2023-10-24T10:26:59.087Z","modified":"2024-09-17T14:18:30.321Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"}],"updated_at":"2026-11-02T14:35:16.771348Z"}],"euvd":[{"id":"EUVD-2023-58034","description":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi component in Synology SSL VPN Client before 1.4.7-0687 allows local users to conduct denial-of-service attacks via unspecified vectors.","status":"published","published":"2023-10-24T10:26:59Z","modified":"2024-09-17T14:18:30Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-03T00:28:21.906955Z"}],"ghsa":[{"id":"GHSA-3744-988x-mqxh","title":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi...","description":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi component in Synology SSL VPN Client before 1.4.7-0687 allows local users to conduct denial-of-service attacks via unspecified vectors.","status":"published","published":"2023-11-14T21:30:51Z","modified":"2023-11-14T21:30:58Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:55:01.181922Z"}],"nvd":[{"id":"CVE-2023-5748","description":"Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi component in Synology SSL VPN Client before 1.4.7-0687 allows local users to conduct denial-of-service attacks via unspecified vectors.","status":"published","published":"2023-11-07T04:24:19.67Z","modified":"2026-06-17T06:49:17.313Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:08:43.669554Z"}]}}