CVE-2012-10053

Simple Web Server 2.2 rc2 contains a stack-based buffer overflow vulnerability in its handling of the Connection HTTP header. When a remote attacker sends an overly long string in this header, the server uses vsprintf() without proper bounds checking, leading to a buffer overflow on the stack. This flaw allows remote attackers to execute arbitrary code with the privileges of the web server process. The vulnerability is triggered before authentication.

• CWE-121

• https://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/
• https://www.pmx.it/software/sws.asp
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb
• https://www.exploit-db.com/exploits/19937
• https://www.exploit-db.com/exploits/20028
• https://www.vulncheck.com/advisories/simple-web-server-connection-header-buffer-overflow
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb
• https://www.exploit-db.com/exploits/19937
• https://www.exploit-db.com/exploits/20028

Published

Aug 8, 2025

Last Modified

Jun 16, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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