CVE-2012-10021

Name: CVE-2012-10021
Creator: NVD / NIST
Published: 2025-07-31T15:15:32.597+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 2.96%

Last modified Jun 16, 2026

CVE-2012-10021 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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. EPSS estimates a 2.96% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

2.96%

85.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-121

Affected Software

Vendor	Product	Versions
Dlink	Dir-605l Firmware	>= 1.12, <= 1.13

References

https://forums.dlink.com/index.php?topic=51923.0Issue Tracking
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/dlink_dir605l_captcha_bof.rbExploit
https://web.archive.org/web/20121012062554/http://www.devttys0.com/2012/10/exploiting-a-mips-stack-overflow/Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/29127Exploit
https://www.vulncheck.com/advisories/dlink-dir605l-captcha-handling-stack-based-buffer-overflowThird Party Advisory

Timeline

Published: Jul 31, 2025
Last Modified: Jun 16, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2012-10021?

How severe is CVE-2012-10021?

CVE-2012-10021 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 2.96% probability of exploitation in the next 30 days.

How do I fix CVE-2012-10021?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-10021?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST