CVE-2012-10053 Simple Web Server Connection Header Buffer Overflow
Remote attackers can execute arbitrary code via a stack-based buffer overflow in the Connection header of Simple Web Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2012-10053?
CVE-2012-10053 is a critical memory corruption vulnerability in PMSoftware Simple Web Server, published on 8 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-121
Which versions are affected by CVE-2012-10053?
How do I fix CVE-2012-10053?
No fix has been published for CVE-2012-10053 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2012-10053 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-10053 exists.
Public exploit code: 2 Metasploit modules.
Sources
Also known as GHSA-2c3g-g985-wqv4.