Stack-Based Buffer Overflow in D-Link DIR-605L Wireless N300 Cloud Router
CVE-2012-10021

9.3CRITICAL

Key Information:

Vendor

D-link
Status
Dir-605l
Vendor
CVE Published:
31 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2012-10021?

A stack-based buffer overflow vulnerability is present in the firmware of the D-Link DIR-605L Wireless N300 Cloud Router. This flaw arises from the unsafe handling of user-supplied CAPTCHA data in the getAuthCode() function, specifically through the FILECODE parameter in the formLogin endpoint. An unauthenticated remote attacker can exploit this vulnerability to execute arbitrary code with root privileges on the affected device, potentially compromising the security and integrity of the system.

Affected Version(s)

DIR-605L 1.12 <= 1.13

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2012-10021 - Proof of Concept

CVE-2012-10021 - Proof of Concept

CVE-2012-10021 - Proof of Concept

References

https://raw.githubusercontent.com/rapid7/metasploit-frame...
exploit
https://web.archive.org/web/20121012062554/http://www.dev...
technical-descriptionexploit
https://www.exploit-db.com/exploits/29127
exploit

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Craig Heffner
.
CVE-2012-10021 : Stack-Based Buffer Overflow in D-Link DIR-605L Wireless N300 Cloud Router