Tenda i3 HTTP R7WebsSecurityHandler Pfadüberschreitung

The primary impact of CVE-2026-5841 is the ability for an attacker to read sensitive files on the affected Tenda i3 router. This could include configuration files containing passwords, SSH keys, or other credentials. An attacker could potentially gain full control of the router if they can leverage this vulnerability to execute arbitrary code or modify system files. The public availability of an exploit significantly increases the risk of widespread exploitation. This vulnerability shares similarities with other path traversal exploits where attackers manipulate file paths to bypass security controls and access unauthorized resources.

1. Reserviert2026-04-08
2. Veröffentlicht2026-04-09
3. EPSS aktualisiert2026-04-16

Due to the lack of a vendor-provided patch, mitigation strategies focus on limiting exposure and detecting potential exploitation. Implement a Web Application Firewall (WAF) with rules to block requests containing suspicious path traversal patterns (e.g., '../', '\\'). Restrict access to the router's web interface from untrusted networks. Monitor router logs for unusual file access attempts. Consider segmenting the router from other critical network resources to limit the blast radius of a potential compromise. While a rollback is not applicable in this scenario, regularly review router configurations for any misconfigurations that could exacerbate the vulnerability.