Buffer overflow in Netcore Nbr200v2
CVE-2026-94100
A weakness has been identified in Netcore NBR200V2 1.3.241127.071246. Impacted is the function wan_config_set_vlan of the file /usr/bin/routerd of the component WAN VLAN Reconfiguration. Executing a manipulation of the argument vlan_wanX.ports can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Netcore Nbr200v2 — versions 1.3.241127.071246
Weakness classification (CWE)
References
- vuldb.com/vuln/408029 (technical-description, vdb-entry)
- vuldb.com/vuln/408029/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-94100 (third-party-advisory)
- vuldb.com/submit/892994 (third-party-advisory)
- app.notion.com/p/Netcore-NBR200V2-Vul-8-39f797159f158003ad3eff2fd36342b6 (exploit)
Frequently asked questions
- What is CVE-2026-94100?
- CVE-2026-94100 is a critical-severity vulnerability in Netcore Nbr200v2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.9/10. Published 2026-09-21.
- How severe is CVE-2026-94100?
- Critical severity. CVSS v3 base score is 9.9 out of 10.