CVE-2026-71911

Description

Multiple DrayTek VigorAP models contain a buffer overflow vulnerability in the setLan function. The vulnerability is caused by missing length checks during memory copy operations involving the lanVlanId0, lanIp, and lanNetmask fields. A remote attacker can trigger this vulnerability via crafted input, causing a denial of service or potentially executing arbitrary commands. Exploitation requires valid administrative credentials for the device's web management interface.

References

https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-buffer-overflow-via-setlan

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS