VulnerabilityDeferred

CVE-2026-71921

Multiple DrayTek VigorSwitch models contain a pre-authentication command injection vulnerability in the setget.cgi interface.

CRITICAL 9.3EPSS 2.79%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Multiple DrayTek VigorSwitch models contain a pre-authentication command injection vulnerability in the setget.cgi interface. The vulnerability is caused by insufficient filtering of the pass field before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges.

CVSS 4.0: 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 2.79% probability · 86th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-78
Source: disclosure@vulncheck.com

EPSS trend

EPSS 2.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.