TOTOLINK A950RG device-information udhcpd.leases getDeviceInfo command injection

Summary

A vulnerability was found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function getDeviceInfo of the file /var/lib/misc/udhcpd.leases of the component device-information Handler. The manipulation of the argument MAC address results in command injection. The attack can be launched remotely. The exploit has been made public and could be used.

Remediation

1. Inventory every TOTOLINK A950RG deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Advisoryhttps://vuldb.com/cve/CVE-2026-116505
• Advisoryhttps://vuldb.com/submit/1022554
• Referencehttps://gist.github.com/H3rmesk1t/836a8c4be24fcc4b7041b4bbe9cbb178
• Referencehttps://vuldb.com/vuln/426403
• Referencehttps://vuldb.com/vuln/426403/cti
• Referencehttps://www.totolink.net/