CVE-2011-4871
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of...
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723.
Exploit likelihood
What each source reports
NVD Score used
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723.
- Record
CVE-2011-4871- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723.
- Record
CVE-2011-4871- Updated
- 2026-11-02
EUVDEUVD-2011-4788 No score
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723.
- Record
EUVD-2011-4788- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-36g6-rvvm-6jhh No score
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of...
Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723.
- Record
GHSA-36g6-rvvm-6jhh- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | OPC Systems.NET 4.00.0048 - Denial of Service | 2011-10-10 |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2011-4871 is a medium vulnerability (CVSS 5.0) in Opcsystems Opcsystems.net, published April 18, 2012. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.12%, the 87th percentile. No source names a fixed version.