The vulnerability CVE-2025-58836 in Franz Wieser FW Anker (versions <= 1.2.6) is a stored cross-site scripting (XSS) issue caused by improper input neutralization during web page generation. This allows an attacker with at least low privileges and requiring user interaction to inject malicious scripts that can affect confidentiality, integrity, and availability to a limited extent. The CVSS vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) reflects network attack vector, low attack complexity, low privileges required, user interaction required, scope changed, and low impact on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected application, potentially leading to limited confidentiality, integrity, and availability impacts. The vulnerability requires user interaction and low privileges, and the scope is changed, meaning the impact extends beyond the vulnerable component. No known exploits are reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor the vendor's communications for updates. Until a fix is available, consider restricting user input or applying web application firewall (WAF) rules to detect and block XSS payloads if feasible.