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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Netcore | NR256CN | ≤ 1.5.140116 | — |
References
- https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-fixed-tmp-sink-write.md technical-description third-party-advisory
- VulnCheck Advisory: Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files third-party-advisory