Medium severity · published Oct 18, 2026
CVE-2026-112016
Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files
6.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NR
NR256CN · Netcore
through 1.5.140116 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-112016
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-112016
github.com
https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-fixed-tmp-sink-write.md
www.vulncheck.com
https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-unauthenticated-write-to-fixed-boa-staging-files
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CVE-2026-111710
Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS
6.5
CVE-2026-111712
Netcore NR256CN through 1.5.140116 Authentication Bypass via CGI Path Prefix