{"id":"CVE-2026-111710","title":"Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS","summary":"Netcore NR256CN through 1.5.140116 contains a NULL pointer dereference vulnerability in the Boa web server's user_auth() function that allows unauthenticated attackers to crash the server via a malformed Authorization header. Attackers c…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-476"],"vendor":"Netcore","product":"NR256CN","affected":["NR256CN <= 1.5.140116"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:40:00.612Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111710","references":[{"url":"https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-basic-auth-null-deref.md"},{"url":"https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-boa-web-server-null-pointer-dereference-dos","label":"VulnCheck Advisory: Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T18:43:08.641Z","slug":"CVE-2026-111710","body":"## Overview\n\nNetcore NR256CN through 1.5.140116 contains a NULL pointer dereference vulnerability in the Boa web server's user_auth() function that allows unauthenticated attackers to crash the server via a malformed Authorization header. Attackers can send a Basic Authorization value lacking a colon, such as one decoding to a single character, to protected routes like /router/get_user_type.cgi to kill the main Boa process and deny management interface access.\n\n## Affected\n\n- `NR256CN <= 1.5.140116`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}