CVE-2026-78796 Command injection in n/a
Remote attackers can execute arbitrary code on Netcore B11 routers via the upgrade CGI script, requiring firmware updates.
- 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-2026-78796?
CVE-2026-78796 is a critical command injection vulnerability in n/a, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router v1.3.241114.024540 and before allows a remote attacker to execute arbitrary code via the www\cgi-bin\upgrade file
Weakness: CWE-78
Which versions are affected by CVE-2026-78796?
How do I fix CVE-2026-78796?
No fix has been published for CVE-2026-78796 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-78796 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78796 exists.
Sources
Also known as GHSA-2w3c-qw6p-h26m.