CVE-2009-20009
CRITICAL EPSS 71.6%
Published Aug 30, 202510mo ago · Modified Jun 16, 20262w ago
9.3 CVSS 4.0
Published Aug 30, 2025 10mo ago
Last Modified Jun 16, 2026 2w ago
Description
Belkin Bulldog Plus version 4.0.2 build 1219 contains a stack-based buffer overflow vulnerability in its web service authentication handler. When a specially crafted HTTP request is sent with an oversized Authorization header, the application fails to properly validate the input length before copying it into a fixed-size buffer, resulting in memory corruption and potential remote code execution. Exploitation requires network access and does not require prior authentication.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
71.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-121
References 5
- raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/belkin_bulldog.rb
- s3.belkin.com https://s3.belkin.com/support/dl/bulldogwindows.pdf
- exploit-db.com https://www.exploit-db.com/exploits/8173
- fortiguard.com https://www.fortiguard.com/encyclopedia/ips/17325/belkin-bulldog-plus-web-services-buffer-overflow
- vulncheck.com https://www.vulncheck.com/advisories/belkin-bulldog-plus-web-service-buffer-overflow
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.