PT-2025-35365 · Belkin · Belkin Bulldog Plus

Published 2025-08-30 · Updated 2025-08-30 · CVE-2009-20009

Positive Technologies (AI Summary)

CVSS v4.0

9.3

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Belkin Bulldog Plus version 4.0.2 build 1219

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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2009-20009

Affected Products

Belkin Bulldog Plus

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2009-20009 · Security Note
• https://vulncheck.com/advisories/belkin-bulldog-plus-web-service-buffer-overflow · Note
• https://exploit-db.com/exploits/8173 · Note
• https://t.me/CVEtracker/31327 · Telegram Post
• https://fortiguard.com/encyclopedia/ips/17325/belkin-bulldog-plus-web-services-buffer-overflow · Note
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/belkin_bulldog.rb · Note
• https://s3.belkin.com/support/dl/bulldogwindows.pdf · Note