CVE-2026-71909— DrayTek VigorAP Multiple Models OS Command Injection via InquierTime
Quick assessment
Affected
DrayTek Corporation VigorAP 918R
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
多款DrayTek VigorAP设备中的InquierTime功能存在命令注入漏洞。该漏洞是由于在命令执行前对时间字段进行了不足够的过滤。远程攻击者可以通过构造恶意输入来触发此漏洞，以获取root权限执行任意命令。然而，利用此漏洞需要拥有该设备Web管理界面的有效管理员凭据。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-71909
Vulnerability Information
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Vulnerability Title
DrayTek VigorAP Multiple Models OS Command Injection via InquierTime
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple DrayTek VigorAP models contain a command injection vulnerability in the InquierTime function. The vulnerability is caused by insufficient filtering of the time field before command execution. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| 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 | - |
|
II. Public POCs for CVE-2026-71909
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-71909 (2)
Same Patch Batch · DrayTek Corporation · 2026-08-24 · 40 CVEs total
| CVE-2026-71914 | 9.8 CRITICAL | DrayTek VigorAP Multiple Models Pre-Authentication OS Command Injection via dray_apm |
| CVE-2026-71921 | 9.8 CRITICAL | DrayTek VigorSwitch Multiple Models Pre-Authentication OS Command Injection via setget.cgi |
| CVE-2026-71933 | 9.1 CRITICAL | DrayTek VigorSwitch Multiple Models Missing Authorization in Syslog Functions |
| CVE-2026-71922 | 7.5 HIGH | DrayTek VigorSwitch Multiple Models Pre-Authentication NULL Pointer Dereference via setget |
| CVE-2026-71915 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models OS Command Injection via jsonstatus |
| CVE-2026-71919 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models OS Command Injection via sysreboot |
| CVE-2026-71910 | 7.2 HIGH | DrayTek VigorAP Multiple Models OS Command Injection via apautotest |
| CVE-2026-71906 | 7.2 HIGH | DrayTek VigorAP Multiple Models OS Command Injection via setLan |
| CVE-2026-71912 | 7.2 HIGH | DrayTek VigorAP Multiple Models Buffer Overflow via apautotest |
| CVE-2026-71917 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models OS Command Injection via pingtrace |
| CVE-2026-71907 | 7.2 HIGH | DrayTek VigorAP Multiple Models OS Command Injection via setcamset |
| CVE-2026-71934 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models Buffer Overflow via pingtrace |
| CVE-2026-71905 | 7.2 HIGH | DrayTek VigorAP Multiple Models OS Command Injection via ExportSettings |
| CVE-2026-71923 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models OS Command Injection via auth_set |
| CVE-2026-71935 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models Buffer Overflow via webBackupAction |
| CVE-2026-71941 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models Buffer Overflow via diag_logmail |
| CVE-2026-71938 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models Buffer Overflow via switch_lan_gvrp |
| CVE-2026-71939 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models Buffer Overflow via acl_general_setup Add ACE |
| CVE-2026-71918 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models OS Command Injection via webBackupAction |
| CVE-2026-71937 | 7.2 HIGH | DrayTek VigorSwitch Multiple Models Buffer Overflow via poe_schedule_profile |
Showing top 20 of 40 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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V. Comments for CVE-2026-71909
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