Buffer overflow in Draytek Corporation Vigorap 1060c
CVE-2026-71911
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
Weakness classification (CWE)
References
- www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buff… (vendor-advisory)
- www.vulncheck.com/advisories/draytek-vigorap-multiple-models-buffer-overflow-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-71911?
- CVE-2026-71911 is a high-severity vulnerability in Draytek Corporation Vigorap 1060c, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.2/10. Published 2026-08-24.
- How severe is CVE-2026-71911?
- High severity. CVSS v3 base score is 7.2 out of 10.