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Fencer Vulns
low 3.9

CVE-2023-28829 json

A vulnerability has been identified in SIMATIC NET PC Software V14 (All versions), SIMATIC NET PC Software V15 (All versions), SIMATIC PCS…

published 2023-06-13 3 y ago modified 2026-10-23 16 d ago also EUVD-2023-32461

cvss
3.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

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.

Patch / fix

  • siemens simatic_wincc 8.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-166-05 updated cvss 3.9

Siemens SIMATIC WinCC

  • Siemens SIMATIC NET PC Software V14 Siemens SIMATIC NET PC Software V15 Siemens SIMATIC PCS 7 V8.2 Siemens SIMATIC PCS 7 V9.0 Siemens SIMATIC PCS 7 V9.1
    affected: workaround, mitigation, no fix planned
  • Siemens SIMATIC WinCC < V8.0
    affected: fixed in V8.0, workaround, mitigation support.industry.siemens.com
  • Siemens SINAUT Software ST7sc
    affected: workaround, mitigation, no fix planned

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 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
CNA 3.1 3.9 CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Siemens SIMATIC NET PC Software V14
  • Siemens SIMATIC NET PC Software V15
  • Siemens SIMATIC PCS 7 V8.2
  • Siemens SIMATIC PCS 7 V9.0
  • Siemens SIMATIC PCS 7 V9.1
  • Siemens SIMATIC WinCC
  • Siemens SINAUT Software ST7sc

Classification

Weakness

References

Sources

Fencer Vulns 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.