CVE-2012-10021 D-Link DIR-605L Captcha Handling Buffer Overflow

CriticalCVSS 9.3 EPSS 5.1% Framework module

Published: 2025-07-31 17:54
Updated: 2026-06-17 02:38
Exploit status: Public exploit available

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

Product	Affected versions	Fixed in
d-link DIR-605L	>= 1.12, <= 1.13	No fix listed
dlink dir-605l firmware	>= 1.12, <= 1.13	No fix listed

References

raw.githubusercontent.com exploit
web.archive.org exploit technical-description third-party-advisory
www.exploit-db.com exploit
forums.dlink.com issue-tracking
www.vulncheck.com third-party-advisory

CVSS v4.0

9.3 Critical

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

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable System Confidentiality: High
Vulnerable System Integrity: High
Vulnerable System Availability: High
Subsequent System Confidentiality: None
Subsequent System Integrity: None
Subsequent System Availability: None

All scores (3)

v4.0 9.3 · vulncheck
v4.0 9.3 · disclosure@vulncheck.com
v3.1 9.8 · nvd@nist.gov

Weakness & likelihood

EPSS (exploitation probability, 30 days): 5.14% (percentile 92.5)
CWE: CWE-121 Stack-based Buffer Overflow

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

D-Link DIR-605L Captcha Handling Buffer Overflow Framework module · Metasploit Framework (Rapid7) · 2012-10-08