CVE-2012-10021: D-Link Dir-605l Firmware

Critical severity, CVSS 9.8. EPSS: 4.4% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability exists in D-Link DIR-605L Wireless N300 Cloud Router firmware versions 1.12 and 1.13 via the getAuthCode() function. The flaw arises from unsafe usage of sprintf() when processing user-supplied CAPTCHA data via the FILECODE parameter in /goform/formLogin. A remote unauthenticated attacker can exploit this to execute arbitrary code with root privileges on the device.

Affected products

• D-Link Dir-605l Firmware: from 1.12, up to and including 1.13

Published 2025-07-31. Last modified 2026-06-16.