CVE-2026-71914

CRITICAL 9.8

DrayTek VigorAP Multiple Models Pre-Authentication OS Command Injection via dray_apm

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

Multiple DrayTek VigorAP models contain a command injection vulnerability in the dray_apm component. The vulnerability is caused by insufficient validation of UDP message content after START_SPEED_TEST before command execution. A remote attacker can trigger this vulnerability via a crafted message to execute arbitrary commands with root privileges.

CWE	CWE-78
Vendor	draytek corporation
Product	vigorap 918r
Published	Aug 24, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

DrayTek Corporation / VigorAP 918R

0 < 1.4.11

DrayTek Corporation / VigorAP 960C

0 < 1.4.12

DrayTek Corporation / VigorAP 1060C

0 < 1.4.12

DrayTek Corporation / VigorAP 906

0 < 1.4.13

DrayTek Corporation / VigorAP 912C

0 < 1.4.15

DrayTek Corporation / VigorAP 903

0 < 1.4.22

References

NVD ↗ CVE.org ↗ EPSS Data ↗

draytek.com: https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/ vulncheck.com: https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-pre-authentication-os-command-injection-via-dray-apm

Credits

Jincheng Wang (@winmt) Le Yu (Nanjing University of Posts and Telecommunications) Xiapu Luo (The Hong Kong Polytechnic University)