Medium severity6.5NVD Advisory· Published Oct 18, 2026

CVE-2026-112016

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Netcore/NR256CNllm-fuzzy
Range: <=1.5.140116

Patches

Vulnerability mechanics

References

github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-fixed-tmp-sink-write.mdnvd
www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-unauthenticated-write-to-fixed-boa-staging-filesnvd

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