CVE-2026-111710CWE-476

CVE-2026-111710

High · published October 16, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
20.5
In the wild
Unconfirmed
What it is

Netcore NR256CN through 1.5.140116 contains a NULL pointer dereference vulnerability in the Boa web server's user_auth() function that allows unauthenticated attackers to crash the server via a malformed Authorization header. Attackers can send a Basic Authorization value lacking a colon, such as one decoding to a single character, to protected routes like /router/get_user_type.cgi to kill the main Boa process and deny management interface access.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00291 · 20.5th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-10-16T22:17Z
References (2)
https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-basic-auth-null-deref.md · [email protected]https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-boa-web-server-null-pointer-dereference-dos · [email protected]
EPSS history
Timeline
  • 18 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 16 OCT 17:40Z
    Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS
    cvelistv5
  • 16 OCT 17:40Z
    Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS
    cvelistv5