CVE-2026-35019

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.

References

• https://signal11.io/advisories/netcomm-nf20-mesh-authentication-bypass
• https://support.netcommwireless.com/api/Media/Firmware/4407c21d-e990-49a4-9754-b72475f20c76?Product=NF20MESH%20Release%20Notes.pdf
• https://support.netcommwireless.com/products/nf20mesh#Firmware
• https://www.vulncheck.com/advisories/netcomm-nf20mesh-r6b032-hardcoded-aes-key-authentication-bypass