Skip to content
Fencer Vulns
high 8.2

CVE-2017-12069 json

An XXE vulnerability has been identified in OPC Foundation UA .NET Sample Code before 2017-03-21 and Local Discovery Server (LDS) before 1.…

published 2017-08-30 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3655

cvss
8.2
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

An XXE vulnerability has been identified in OPC Foundation UA .NET Sample Code before 2017-03-21 and Local Discovery Server (LDS) before 1.03.367. Among the affected products are Siemens SIMATIC PCS7 (All versions V8.1 and earlier), SIMATIC WinCC (All versions < V7.4 SP1), SIMATIC WinCC Runtime Professional (All versions < V14 SP1), SIMATIC NET PC Software, and SIMATIC IT Production Suite. By sending specially crafted packets to the OPC Discovery Server at port 4840/tcp, an attacker might cause the system to access various resources chosen by the attacker.

Patch / fix

Vendor advisories

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

cisa ICSA-17-243-01 updated cvss 8.2

Siemens OPC UA Protocol Stack Discovery Service (Update E)

  • Siemens SIMATIC IT Production Suite >=V6.5_and_<V7.1
    affected: fixed in V7.1, mitigation
  • Siemens SIMATIC NET PC Software V14 <V14_SP1_Update_14
    affected: fixed in V14, mitigation support.industry.siemens.com
  • Siemens SIMATIC PCS 7 8.0, 8.1 Siemens SIMATIC WinCC <V7.2 Siemens SIMATIC WinCC Runtime Professional V13
    affected: mitigation, no fix planned
  • Siemens SIMATIC WinCC Runtime Professional V14 <V14_SP1
    affected: fixed in V14, mitigation support.industry.siemens.com

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

Exploit prediction

2.90% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.2 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

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.