CVE-2026-112016CWE-306

CVE-2026-112016

Medium · published October 18, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
25.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
6.9 · 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
EPSS
0.00335 · 25.6th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-18T16:17Z
References (2)
https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-fixed-tmp-sink-write.md · [email protected]https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-unauthenticated-write-to-fixed-boa-staging-files · [email protected]
EPSS history
Timeline
  • 20 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 18 OCT 11:38Z
    Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files
    cvelistv5
  • 18 OCT 11:38Z
    Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files
    cvelistv5