Vulnerability in Draytek Corporation Vigor1000b

CVE-2025-10547

An uninitialized variable in the HTTP CGI request arguments processing component of Vigor Routers running DrayOS may allow an attacker the ability to perform RCE on the appliance through memory corruption.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-10547: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

References

Frequently asked questions

What is CVE-2025-10547?
CVE-2025-10547 is a critical-severity vulnerability in Draytek Corporation Vigor1000b, classified under CWE-456: MISSING INITIALIZATION OF A VARIABLE. CVSS score: 9.8/10. Published 2025-10-03.
How severe is CVE-2025-10547?
Critical severity. CVSS v3 base score is 9.8 out of 10.