CVE-2026-71909

DrayTek VigorAP Multiple Models OS Command Injection via InquierTime

HIGH

7.2

CVSS Score

Published: August 24, 2026 at 05:07 PM UTC

Updated: October 13, 2026 at 09:10 AM UTC

12 products affected across 1 vendorVigorap 903 FirmwareVigorap 918R FirmwareVigorap 912C Firmware

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Severity

HIGH7.2

Exploit prediction

EPSS 2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vigorap 1060C Firmware · Draytek

95%

v < 1.4.12

Affected range stops below 1.4.12, so it looks safe — our inference, not a vendor statement

Vigorap 903 Firmware · Draytek

95%

v < 1.4.22

Affected range stops below 1.4.22, so it looks safe — our inference, not a vendor statement

Vigorap 906 Firmware · Draytek

95%

v < 1.4.13

Affected range stops below 1.4.13, so it looks safe — our inference, not a vendor statement

Vigorap 912C Firmware · Draytek

95%

v < 1.4.15

Affected range stops below 1.4.15, so it looks safe — our inference, not a vendor statement

Vigorap 918R Firmware · Draytek

95%

v < 1.4.11

Affected range stops below 1.4.11, so it looks safe — our inference, not a vendor statement

Vigorap 960C Firmware · Draytek

95%

v < 1.4.12

Affected range stops below 1.4.12, so it looks safe — our inference, not a vendor statement

VigorAP 1060C · Draytek

90%

0 ≤ v < 1.4.120

Affected range stops below 1.4.12, so it looks safe — our inference, not a vendor statement

VigorAP 903 · Draytek

90%

0 ≤ v < 1.4.220

Affected range stops below 1.4.22, so it looks safe — our inference, not a vendor statement

VigorAP 906 · Draytek

90%

0 ≤ v < 1.4.130

Affected range stops below 1.4.13, so it looks safe — our inference, not a vendor statement

VigorAP 912C · Draytek

90%

0 ≤ v < 1.4.150

Affected range stops below 1.4.15, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/

References (2)

Vendor Advisory

Source: cverecord

https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/

Third Party Advisory

Source: cverecord

https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-os-command-injection-via-inquiertime

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHVulnCheck

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-78

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