CVE-2021-33425
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk41th percentile - higher than 41% of all known CVEs
Summary
A stored cross-site scripting (XSS) vulnerability was found in the LuCI web interface for OpenWRT version 19.07. It allows an attacker to inject arbitrary JavaScript via the Hostname change operation.
Risk Assessment
An attacker could hijack an administrator session, steal credentials, or perform unauthorized actions on the router, compromising the entire network's security.
Recommendation
Immediately update OpenWRT to the latest stable version that includes a fix for this vulnerability. If an update is not possible, restrict access to the LuCI interface to trusted IP addresses only.
Original NVD description (English source)
A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI version 19.07 which allows attackers to inject arbitrary Javascript in the OpenWRT Hostname via the Hostname Change operation.