by Kastro
Paper/Archive/CVE-2026-71914

CVE-2026-71914

DrayTek Corporation VigorAP 918R — DrayTek VigorAP Multiple Models Pre-Authentication OS Command Injection via dray_apm

EPSS 3%CVSS 9.8
critical.is priorityof 100
46
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 85.1.851 × 2017.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
VigorAP 918R< 1.4.111.4.11CNA
VigorAP 960C< 1.4.121.4.12CNA
VigorAP 1060C< 1.4.121.4.12CNA
VigorAP 906< 1.4.131.4.13CNA
VigorAP 912C< 1.4.151.4.15CNA
VigorAP 903< 1.4.221.4.22CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

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