CVE-2012-10021

D-Link Dir-605l Firmware remote code execution

9.8 CRITICALPublic exploitEPSS 4.44%

Published31 Jul 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

D-Link Dir-605l Firmware≥ 1.12 ≤ 1.13

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

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/ExploitThird Party Advisory
https://www.exploit-db.com/exploits/29127Exploit
https://www.vulncheck.com/advisories/dlink-dir605l-captcha-handling-stack-based-buffer-overflowThird Party Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2012-10021 being actively exploited?

CVE-2012-10021 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 4.44%.

How severe is CVE-2012-10021?

CVE-2012-10021 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 4.44% probability of exploitation.

Which products are affected by CVE-2012-10021?

Affected products include D-Link Dir-605l Firmware.

How do I fix CVE-2012-10021?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2012-10021 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.