CVE-2017-6867 — A vulnerability was discovered in Siemens SIMATIC WinCC (V7.3 before Upd 11 and V7.4 before SP1), SIMATIC WinCC Runtime Professional (V13 before SP2 and V14 before SP1), SIMATIC WinCC (TIA Portal) Professional (V13 before SP2 and V14 before SP1) that could allow an authenticated, remote attacker who is member of the "administrators" group to crash services by sending specially crafted messages to the DCOM interface

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MEDIUM

A vulnerability was discovered in Siemens SIMATIC WinCC (V7.3 before Upd 11 and V7.4 before SP1), SIMATIC WinCC Runtime Professional (V13 before SP2 and V14 before SP1), SIMATIC WinCC (TIA Portal) Professional (V13 before SP2 and V14 before SP1) that could allow an authenticated, remote attacker who is member of the "administrators" group to crash services by sending specially crafted messages to the DCOM interface

Published May 11, 2017

4.9

MEDIUM

CVSS 3.0

EPSS 1.92%

Description

A vulnerability was discovered in Siemens SIMATIC WinCC (V7.3 before Upd 11 and V7.4 before SP1), SIMATIC WinCC Runtime Professional (V13 before SP2 and V14 before SP1), SIMATIC WinCC (TIA Portal) Professional (V13 before SP2 and V14 before SP1) that could allow an authenticated, remote attacker who is member of the "administrators" group to crash services by sending specially crafted messages to the DCOM interface.

Affected products

Vendor n/a Product Siemens SIMATIC WinCC Default
n/a
- Version
  Siemens SIMATIC WinCC
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Siemens SIMATIC WinCC

n/a

Version	Status	Constraints
Siemens SIMATIC WinCC	affected	-

Remediation

No remediation recorded yet.

Metrics

1.92% 0.01923

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01923

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.92% (0.01923)	79.19th	v5 (v2026.06.15)
Sep 20, 2026	1.92% (0.01923)	79.02th	v5 (v2026.06.15)
Jul 20, 2024	0.29% (0.00291)	69.39th	v3 (v2023.03.01)
Feb 8, 2024	0.29% (0.00291)	68.19th	v3 (v2023.03.01)
Sep 3, 2023	0.29% (0.00291)	65.16th	v3 (v2023.03.01)
Mar 7, 2023	0.26% (0.00261)	61.99th	v3 (v2023.03.01)
Mar 6, 2023	1.06% (0.01061)	52.82th	v2 (v2022.01.01)
Feb 4, 2022	1.06% (0.01061)	28.23th	v2 (v2022.01.01)
Feb 3, 2022	1.05% (0.01046)	28.66th	v5 (v2026.06.15)
Apr 14, 2021	1.05% (0.01046)	0.00th	v1

Weaknesses (2)

CWE-20

Improper Input Validation

CWE-787

Out-of-bounds Write

References (3)

http://www.securityfocus.com/bid/98368
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-523365.pdf
x_refsource_CONFIRM
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-156872.pdf
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/98368		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-523365.pdf		x_refsource_CONFIRM
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-156872.pdf		x_refsource_CONFIRMVendor Advisory