Buffer overflow in D-Link Dir-605l
CVE-2012-10021
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.048 (91.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.044 · newest: 0.048 · change: +0.003
Affected products
- D-Link Dir-605l — versions 1.12
- Dlink Dir-605l
- Dlink Dir-605l Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/l… (Exploit, exploit)
- web.archive.org/web/20121012062554/http://www.devttys0.com/2012/10/exploiting-a… (Exploit, technical-description, Third Party Advisory, exploit)
- www.exploit-db.com/exploits/29127 (Exploit, exploit)
- forums.dlink.com/index.php (Issue Tracking)
- www.vulncheck.com/advisories/dlink-dir605l-captcha-handling-stack-based-buffer-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2012-10021?
- CVE-2012-10021 is a critical-severity vulnerability in D-Link Dir-605l, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-07-31.
- How severe is CVE-2012-10021?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2012-10021 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.