CVE-2012-10053 json
Simple Web Server Connection Header Buffer Overflow
published 2025-08-08 15 mo ago modified 2026-06-16 4 mo ago also EUVD-2012-6582
- cvss
- 9.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 80%
- public exploits
- 2
- Metasploit
Summary
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.
Timeline
- First public exploit (Metasploit exploit/windows/fileformat/somplplayer_m3u)
- Published
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 15 mo ago
Exploit prediction
1.94% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/windows/http/sws_connection_bof Simple Web Server Connection Header Buffer Overflow metasploit exploit, normal rank, 2012-07-20
- Metasploit exploit/windows/fileformat/somplplayer_m3u S.O.M.P.L 1.0 Player Buffer Overflow metasploit exploit, great rank, 2010-01-22
- raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb referenced PoC, tagged "exploit" by a source, unverified
- exploit-db.com https://www.exploit-db.com/exploits/19937 referenced PoC, tagged "exploit" by a source, unverified
- exploit-db.com https://www.exploit-db.com/exploits/20028 referenced PoC, tagged "exploit" by a source, unverified
- ghostinthelab.wordpress.com http://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 4.0 | 9.3 | 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 |
Affected products
- PMSoftware Simple Web Server
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
raw.githubusercontent.com
/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb
exploit
-
exploit-db.com
/exploits/19937
exploit
-
exploit-db.com
/exploits/20028
exploit
-
ghostinthelab.wordpress.com
/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/
technical-description, exploit
-
pmx.it
/software/sws.asp
product
-
vulncheck.com
/advisories/simple-web-server-connection-header-buffer-overflow
third-party-advisory
Sources
- CVE List CVE-2012-10053
- NVD CVE-2012-10053
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.