Medium (4.7) in draytek vigor3910 firmware. EPSS 0.3% chance of exploitation in the next 30 days.
DrayTek Vigor3910 devices through 4.3.2.6 are vulnerable to reflected XSS by authenticated users, caused by missing validation of the sFormAuthStr parameter.
Severity
CVSS 3.1
4.7 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)