SEPTEMBER 18, 2026
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Case File

CVE-2026-71931

HIGH · CVSS 7.2 EPSS 2.40% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-24 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

Multiple DrayTek VigorSwitch models are vulnerable to a command injection flaw in the tftp_upgrade function, allowing remote attackers with valid administrative credentials to execute arbitrary commands with root privileges due to inadequate input filtering. This high-severity vulnerability poses a significant risk to network integrity and device security. Organizations using affected VigorSwitch models should prioritize patching or mitigating this issue to prevent potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-71931
Severity
HIGH
CVSS
7.2
EPSS
2.40%

Original NVD Description

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.