# CVE-2023-28829

## Summary

- **CVE ID:** CVE-2023-28829
- **Severity:** LOW
- **CVSS Score:** 3.9 (CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C)
- **CWE:** CWE-477
- **Published:** Jun 13, 2023
- **Last Modified:** Mar 13, 2026

## Description

A vulnerability has been identified in SIMATIC NET PC Software V14 (All versions), SIMATIC NET PC Software V15 (All versions), SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions), SIMATIC WinCC (All versions < V8.0), SINAUT Software ST7sc (All versions). Before SIMATIC WinCC V8, legacy OPC services (OPC DA (Data Access), OPC HDA (Historical Data Access), and OPC AE (Alarms & Events)) were used per default. These
services were designed on top of the Windows ActiveX and DCOM mechanisms and do not implement state-of-the-art security mechanisms for authentication and encryption of contents.

## Affected Products

- Siemens — SIMATIC NET PC Software V14 (All versions)
- Siemens — SIMATIC NET PC Software V15 (All versions)
- Siemens — SIMATIC PCS 7 V8.2 (All versions)
- Siemens — SIMATIC PCS 7 V9.0 (All versions)
- Siemens — SIMATIC PCS 7 V9.1 (All versions)
- Siemens — SIMATIC WinCC (All versions < V8.0)
- Siemens — SINAUT Software ST7sc (All versions)

## References

- [CNA](https://cert-portal.siemens.com/productcert/pdf/ssa-508677.pdf)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.08%
- **EPSS Percentile:** 23.5

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._