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.
Advisories

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Fixes

Solution

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Workaround

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History

Mon, 24 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title DrayTek VigorSwitch Multiple Models Pre-Authentication OS Command Injection via setget.cgi
First Time appeared Draytek
Draytek vigorswitch Fx2120 Firmware
Draytek vigorswitch G1282 Firmware
Draytek vigorswitch G2100 Firmware
Draytek vigorswitch G2121 Firmware
Draytek vigorswitch G2280x Firmware
Draytek vigorswitch G2540xs Firmware
Draytek vigorswitch P1282 Firmware
Draytek vigorswitch P2100 Firmware
Draytek vigorswitch P2280x Firmware
Draytek vigorswitch P2540xs Firmware
Draytek vigorswitch Pq2121x Firmware
Draytek vigorswitch Pq2200xb Firmware
Draytek vigorswitch Q2121x Firmware
Draytek vigorswitch Q2200x Firmware
Weaknesses CWE-78
CPEs cpe:2.3:o:draytek:vigorswitch_fx2120_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_g1282_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_g2100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_g2121_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_g2280x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_g2540xs_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_p1282_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_p2100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_p2280x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_p2540xs_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_pq2121x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_pq2200xb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_q2121x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorswitch_q2200x_firmware:*:*:*:*:*:*:*:*
Vendors & Products Draytek
Draytek vigorswitch Fx2120 Firmware
Draytek vigorswitch G1282 Firmware
Draytek vigorswitch G2100 Firmware
Draytek vigorswitch G2121 Firmware
Draytek vigorswitch G2280x Firmware
Draytek vigorswitch G2540xs Firmware
Draytek vigorswitch P1282 Firmware
Draytek vigorswitch P2100 Firmware
Draytek vigorswitch P2280x Firmware
Draytek vigorswitch P2540xs Firmware
Draytek vigorswitch Pq2121x Firmware
Draytek vigorswitch Pq2200xb Firmware
Draytek vigorswitch Q2121x Firmware
Draytek vigorswitch Q2200x Firmware
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-24T17:07:50.939Z

Reserved: 2026-08-08T16:37:44.518Z

Link: CVE-2026-71921

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-24T18:17:07.060

Modified: 2026-08-24T18:17:07.060

Link: CVE-2026-71921

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-24T19:30:17Z

Weaknesses