CVE-2026-111710 Netcore NR256CN through 1.5.140116 Boa Web Server NULL Pointer Dereference DoS
Unauthenticated attackers can crash the Netcore NR256CN router's management interface by sending a malformed Authorization header to the Boa web server.
- 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-2026-111710?
CVE-2026-111710 is a high-severity vulnerability in Netcore NR256CN, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2026-111710?
How do I fix CVE-2026-111710?
No fix has been published for CVE-2026-111710 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111710 being exploited?
There is no known exploitation of CVE-2026-111710 in the wild and no public exploit code.
Sources
Also known as GHSA-w32x-fxxg-m4fc.