Vulnerability · Published Jun 23, 2026 · Assigned by VulnCheck
CVE-2026-35019NetComm NF20MESH < R6B032 Hardcoded AES Key Authentication Bypass
High 8.1
In plain English
A high-severity security flaw in NF20MESH from NetComm Wireless Pty Ltd. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Official description
NetComm NF20MESH routers running firmware R6B031 and earlier contain an authentication bypass vulnerability that allows unauthenticated attackers to gain administrative access by exploiting a hardcoded AES-256 key used to encrypt session cookies for the web management interface. Attackers can forge a valid encrypted session cookie using the shared hardcoded key and bypass authentication checks to obtain full administrative control of the management interface while any legitimate administrator session is active.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NetComm Wireless Pty Ltd | NF20MESH | 0 – before R6B032 |
Weakness: CWE-321 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://signal11.io/advisories/netcomm-nf20-mesh-authentication-bypass technical-description
- https://support.netcommwireless.com/api/Media/Firmware/4407c21d-e990-49a4-9754-b72475f20c76?Product=NF20MESH%20Release%20Notes.pdf release-notes, patch
- https://support.netcommwireless.com/products/nf20mesh#Firmware product
- https://www.vulncheck.com/advisories/netcomm-nf20mesh-r6b032-hardcoded-aes-key-authentication-bypass third-party-advisory