High 7.5Published Oct 16, 2026

CVE-2026-111710Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS

Updated under an hour ago (Oct 28, 2026, 8:00 AM ET)

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It affects Netcore NR256CN. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.29%, higher than 22% of scored CVEs.

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Every CVE for Netcore NR256CN

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.29% (percentile 22)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 16, 2026

Affected products

Affected products

Netcore NR256CN netcore:nr256cn (from the name)	through 1.5.140116	CNA record

References

References

https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2ad7fa2aff1/2026.10.15-netcore-nr256cn-basic-auth-null-deref.md	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-boa-web-server-null-pointer-dereference-dos	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.