CVE-2026-71931 — DrayTek VigorSwitch Multiple Models OS Command Injection via tftp_upgrade
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the tftp_upgrade function. The vulnerability is caused by insufficient filtering before the file…
Published: 2026-08-24 · CVSS: 8.6 · CVSS 4.0
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the tftp_upgrade function. The vulnerability is caused by insufficient filtering before the filename field is concatenated into a command. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7