{"id":"CVE-2023-31470","aliases":["EUVD-2023-35775","GHSA-x59p-gvr8-w8pq"],"status":"published","title":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer...","description":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01117,"percentile":0.66374,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2023-04-28T00:00:00Z","modified":"2026-10-28T10:32:54Z","products":[{"vendor":"pymumu","product":"smartdns"}],"references":[{"url":"https://github.com/pymumu/smartdns/issues/1378","tags":["x_transferred","Exploit","report"]},{"url":"https://github.com/pymumu/smartdns/commit/56d0332bf91104cfc877635f6c82e9348587df04","tags":["x_transferred","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-31470","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x59p-gvr8-w8pq"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31470.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-31470","description":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.","status":"published","published":"2023-04-28T00:00:00Z","modified":"2025-01-31T15:58:25.346Z","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":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:27.430605Z"}],"euvd":[{"id":"EUVD-2023-35775","description":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.","status":"published","published":"2023-04-28T00:00:00Z","modified":"2025-01-31T15:58:25Z","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":"2026-11-03T00:04:08.172652Z"}],"ghsa":[{"id":"GHSA-x59p-gvr8-w8pq","title":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer...","description":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.","status":"published","published":"2023-04-28T21:30:20Z","modified":"2024-04-04T03:44:15Z","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-787"],"updated_at":"2026-11-02T14:56:18.00765Z"}],"nvd":[{"id":"CVE-2023-31470","description":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.","status":"published","published":"2023-04-28T21:15:09.307Z","modified":"2026-06-17T05:57:02.5Z","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":"primary"},{"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"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:59.151142Z"}],"osv":[{"id":"CVE-2023-31470","description":"SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.","status":"published","published":"2023-04-28T00:00:00Z","modified":"2026-10-28T10:32:54.332594814Z","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":"2026-11-02T15:44:31.790231Z"}]}}