How severe is CVE-2017-6867?

CVE-2017-6867 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-6867 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6867?

CVE-2017-6867 primarily affects Siemens Simatic Wincc. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-6867?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-6867 published?

CVE-2017-6867 was published on 2017-05-11 and last updated on 2026-06-17.

CVE-2017-6867

CVE-2017-6867 is a medium-severity vulnerability in Siemens Simatic Wincc with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
CVSS v2: 4.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Siemens Simatic Wincc
Published: 2017-05-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-6867?: CVE-2017-6867 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-6867 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6867?: CVE-2017-6867 primarily affects Siemens Simatic Wincc. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-6867?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-6867 published?: CVE-2017-6867 was published on 2017-05-11 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:siemens:simatic_wincc:7.3:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_wincc:7.4:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):13:sp1:*:*:professional:*:*:*
cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):14:*:*:*:professional:*:*:*
cpe:2.3:a:siemens:simatic_wincc_runtime:13:sp1:*:*:professional:*:*:*
cpe:2.3:a:siemens:simatic_wincc_runtime:14:*:*:*:professional:*:*:*

More vulnerabilities in Siemens Simatic Wincc

CVE-2014-8551 — Critical (CVSS 10.0): The WinCC server in Siemens SIMATIC WinCC 7.0 through SP3, 7.2 before Update 9, and 7.3 before Update 2; SIMATIC PCS 7…
CVE-2021-40358 — Critical (CVSS 9.9): A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3…
CVE-2019-10922 — Critical (CVSS 9.8): A vulnerability has been identified in SIMATIC PCS 7 V8.0 and earlier (All versions), SIMATIC PCS 7 V8.1 and newer (All…
CVE-2016-5743 — Critical (CVSS 9.8): Siemens SIMATIC WinCC before 7.3 Update 10 and 7.4 before Update 1, SIMATIC BATCH before 8.1 SP1 Update 9 as…
CVE-2021-40360 — High (CVSS 8.8): A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC…
CVE-2019-10918 — High (CVSS 8.8): A vulnerability has been identified in SIMATIC PCS 7 V8.0 and earlier (All versions), SIMATIC PCS 7 V8.1 (All versions…

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