Unrated severityNVD Advisory· Published Jul 31, 2025· Updated Apr 7, 2026
D-Link DIR-605L Captcha Handling Buffer Overflow
CVE-2012-10021
Description
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
2- D-Link/DIR-605Lv5Range: 1.12
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/dlink_dir605l_captcha_bof.rbmitreexploit
- web.archive.org/web/20121012062554/http://www.devttys0.com/2012/10/exploiting-a-mips-stack-overflow/mitretechnical-descriptionexploit
- www.exploit-db.com/exploits/29127mitreexploit
- www.vulncheck.com/advisories/dlink-dir605l-captcha-handling-stack-based-buffer-overflowmitrethird-party-advisory
- forums.dlink.com/index.phpmitre
News mentions
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