CVE-2026-7857: D-Link Di-8100 Firmware

High severity, CVSS 7.2. EPSS: 1.2% chance of exploitation in the next 30 days.

A vulnerability has been found in D-Link DI-8100 16.07.26A1. This vulnerability affects the function sprintf of the file /user_group.asp of the component CGI Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

• D-Link Di-8100 Firmware: version 16.07.26a1 only

Published 2026-05-05. Last modified 2026-07-24.