CVE-2026-71991 MSI Radix AXE6600 v781521 Command Injection via TelnetSSH Function
Remote attackers can execute arbitrary commands and gain root privileges on MSI Radix AXE6600 routers via the Telnet configuration interface.
- 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-2026-71991?
CVE-2026-71991 is a critical command injection vulnerability in MSI Radix AXE6600, published on 8 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MSI Radix AXE6600 router firmware version v781521 contains a command injection vulnerability in the TelnetSSH function used for Telnet configuration that allows remote attackers to execute arbitrary commands on the affected device. Attackers can exploit this vulnerability through the Telnet configuration interface to inject malicious commands and obtain root privileges on the underlying system.
Weakness: CWE-78
Which versions are affected by CVE-2026-71991?
How do I fix CVE-2026-71991?
No fix has been published for CVE-2026-71991 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-2026-71991 being exploited?
There is no known exploitation of CVE-2026-71991 in the wild and no public exploit code.
Sources
Also known as GHSA-3mcf-6wx8-8w5c.