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Fencer Vulns
medium 4.9

CVE-2017-6867 json

A vulnerability was discovered in Siemens SIMATIC WinCC (V7.3 before Upd 11 and V7.4 before SP1), SIMATIC WinCC Runtime Professional (V13 b…

published 2017-05-11 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15921

cvss
4.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

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.

Vendor advisories

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

cisa ICSA-17-306-01 updated cvss 4.9

ICSA-17-306-01 Siemens SIMATIC PCS 7 (Update A)

  • Siemens SIMATIC PCS 7 V8.1 <V8.1_SP1_with_WinCC_V7.3_Upd_13
    affected: fixed in V7.3, mitigation support.industry.siemens.com
  • Siemens SIMATIC PCS 7 V8.2 <V8.2_SP1
    affected: mitigation

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

cisa ICSA-17-129-03 updated cvss 4.9

Siemens SIMATIC WinCC and SIMATIC WinCC Runtime Professional

  • Siemens SIMATIC WinCC < 7.4 SP1, < 7.3 Update 11 Siemens SIMATIC WinCC Runtime Professional / SIMATIC WinCC (TIA Portal) Professional < 14 SP1, < 13 SP2
    affected: vendor fix support.industry.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.92% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 4.9 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

  • n/a Siemens SIMATIC WinCC

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.