Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.03123 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opcsystems:opcsystems.net:*:*:*:*:*:*:*:* | up to 4.0 | Vulnerable | Opcsystems |
- cpe:2.3:a:opcsystems:opcsystems.net:*:*:*:*:*:*:*:* Versions up to 4.0 Vulnerable ·Opcsystems
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4871
- 2026-10-03 Alias added: GHSA-36g6-rvvm-6jhh
References
More Opcsystems.net vulnerabilities
- TI-2012-00220 Buffer overflow in the VSFlex7.VSFlexGrid ActiveX control in ComponentOne FlexGrid 7.1… CVSS 2.0HIGH 9.3
Sources
- CVE-2011-4871 · CVE Program
- CVE-2011-4871 · NVD
- FIRST EPSS
- GHSA-36g6-rvvm-6jhh · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences