CVE-2026-35019 NetComm NF20MESH < R6B032 Hardcoded AES Key Authentication Bypass
Attackers can bypass authentication and gain administrative control of NetComm NF20MESH routers by forging session cookies using a hardcoded AES key.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-35019?
CVE-2026-35019 is a critical vulnerability in NetComm Wireless Pty Ltd NF20MESH, published on 23 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-321
Which versions are affected by CVE-2026-35019?
How do I fix CVE-2026-35019?
No fix has been published for CVE-2026-35019 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-35019 being exploited?
There is no known exploitation of CVE-2026-35019 in the wild and no public exploit code.
Sources
Also known as GHSA-pqh9-6ffr-v5fc.