{"id":"CVE-2026-112016","state":"PUBLISHED","title":"Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files","description":"Netcore NR256CN through 1.5.140116 contains an unauthenticated file write vulnerability in the Boa-derived /bin/boa web server that allows remote attackers to overwrite update and restore staging files. Attackers can POST to a non-existent .cgi pathname to write attacker-controlled content into /tmp/boa_temp.update or /tmp/boa_temp.para, tampering with pending firmware updates or configuration restores or causing denial of service.","publishedAt":"2026-10-18T11:38:37.119Z","updatedAt":"2026-10-19T16:03:11.589Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Netcore NR256CN"],"affected":[{"vendor":"Netcore","product":"NR256CN","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.5.140116","versionType":"custom"}]}],"references":["https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-fixed-tmp-sink-write.md","https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-unauthenticated-write-to-fixed-boa-staging-files"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/112xxx/CVE-2026-112016.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-112016","state":"PUBLISHED","datePublished":"2026-10-18T11:38:37.119Z","dateUpdated":"2026-10-19T16:03:11.589Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-18T01:24:03.208Z"},"containers":{"cna":{"title":"Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files","descriptions":[{"lang":"en","value":"Netcore NR256CN through 1.5.140116 contains an unauthenticated file write vulnerability in the Boa-derived /bin/boa web server that allows remote attackers to overwrite update and restore staging files. 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