# CVE-2026-71906: DrayTek VigorAP OS command injection in setLan

Source: https://junglewise.ai/threats/cve-2026-71906-draytek-vigorap-os-command-injection-in-setlan  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-24. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-71906 · Severity: high · CVSS 7.2 · Published 2026-08-24

DrayTek VigorAP access points are network devices that provide wireless connectivity in corporate and enterprise environments. A command injection vulnerability in the network configuration function allows authenticated administrators to execute arbitrary system commands with root privileges on the device. An attacker with valid admin credentials could compromise the access point, potentially leading to network outages, data interception, or lateral movement within the network.

Technologies: [DrayTek VigorAP 1060C](https://junglewise.ai/threats/technologies/vigorap-1060c), [DrayTek VigorAP 903](https://junglewise.ai/threats/technologies/vigorap-903), [DrayTek VigorAP 906](https://junglewise.ai/threats/technologies/vigorap-906), [DrayTek VigorAP 912C](https://junglewise.ai/threats/technologies/vigorap-912c), [DrayTek VigorAP 918R](https://junglewise.ai/threats/technologies/vigorap-918r), [DrayTek VigorAP 960C](https://junglewise.ai/threats/technologies/vigorap-960c). Vendors: [DrayTek](https://junglewise.ai/threats/vendors/draytek).

## Quick answers

**Is CVE-2026-71906 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-71906 being exploited in the wild.

**How severe is CVE-2026-71906?** High severity, with a CVSS score of 7.2, published 24 August 2026.

**Which products and versions are affected?** DrayTek VigorAP 1060C < 1.4.12; DrayTek VigorAP 903 < 1.4.22; DrayTek VigorAP 906 < 1.4.13; DrayTek VigorAP 912C < 1.4.15; and 2 more.

**Is there a fix for CVE-2026-71906?** A patch was published on 2026-08-24. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-71906 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-71906?** Check whether you run DrayTek VigorAP 1060C, DrayTek VigorAP 903, DrayTek VigorAP 906 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an OS command injection flaw (CWE-78) in the setLan function, caused by insufficient validation of the lanIp and lanNetmask input fields before they are used in system command execution. The attack vector is network-based; however, exploitation requires valid administrative credentials and authentication to the device's web management interface, making this a high-privilege attack requiring prior account compromise or insider access. A successful exploit enables an attacker to execute arbitrary commands with root privileges on the VigorAP device. DrayTek has released patched firmware versions for all affected models (VigorAP 903, 906, 912C, 918R, 960C, and 1060C), and users should upgrade immediately to mitigate this risk.

## Affected products

- DrayTek VigorAP 918R < 1.4.11
- DrayTek VigorAP 960C < 1.4.12
- DrayTek VigorAP 1060C < 1.4.12
- DrayTek VigorAP 906 < 1.4.13
- DrayTek VigorAP 912C < 1.4.15
- DrayTek VigorAP 903 < 1.4.22

## Timeline

- 2026-08-24: disclosed
- 2026-08-24: patched

## References

- [https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/](https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/)
- [https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-os-command-injection-via-setlan](https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-os-command-injection-via-setlan)

## Related threats

- [DrayTek VigorAP command injection in dray_apm](https://junglewise.ai/threats/cve-2026-71914-draytek-vigorap-command-injection-in-dray-apm)
- [DrayTek VigorAP command injection in upload_settings.cgi](https://junglewise.ai/threats/cve-2026-71913-draytek-vigorap-command-injection-in-upload-settings-cgi)
- [DrayTek VigorAP buffer overflow in apautotest](https://junglewise.ai/threats/cve-2026-71912-draytek-vigorap-buffer-overflow-in-apautotest)
- [DrayTek VigorAP buffer overflow in setLan function](https://junglewise.ai/threats/cve-2026-71911-draytek-vigorap-buffer-overflow-in-setlan-function)
- [DrayTek VigorAP OS command injection in apautotest](https://junglewise.ai/threats/cve-2026-71910-draytek-vigorap-os-command-injection-in-apautotest)