CVE-2011-5033
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when...
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when running on a DirectAdmin server, allows local users to cause a denial of service (crash) via a long string in an admin.list file.
Exploit likelihood
What each source reports
NVD Score used
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when running on a DirectAdmin server, allows local users to cause a denial of service (crash) via a long string in an admin.list file.
- Record
CVE-2011-5033- CVSS 2.0
- 4.4 Medium
AV:L/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE ListNo score
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when running on a DirectAdmin server, allows local users to cause a denial of service (crash) via a long string in an admin.list file.
- Record
CVE-2011-5033- Updated
- 2026-11-02
EUVDEUVD-2011-4938No score
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when running on a DirectAdmin server, allows local users to cause a denial of service (crash) via a long string in an admin.list file.
- Record
EUVD-2011-4938- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rf2x-23jg-qfw8No score
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when...
Stack-based buffer overflow in CFS.c in ConfigServer Security & Firewall (CSF) before 5.43, when running on a DirectAdmin server, allows local users to cause a denial of service (crash) via a long string in an admin.list file.
- Record
GHSA-rf2x-23jg-qfw8- Weakness
- CWE-119
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | CSF Firewall - Buffer Overflow (PoC) | 2011-12-09 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-5033 is a medium vulnerability (CVSS 4.4) in Configserver Security Firewall, published December 29, 2011. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.68%, the 53rd percentile. No source names a fixed version.