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.

Published: 2017-05-11 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-6867 is rated Moderate Risk (47.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.92%). EPSS rose +1.31% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-6867

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.61% 1.92% +1.31%
2 2025-03-30 0.81% 0.61% -0.20%
3 2025-03-29 — 0.81% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-6867

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2017-6867

Affected software / configurations for CVE-2017-6867

Vendor Product Version Raw CPE
siemens simatic_wincc 7.3 cpe:2.3:a:siemens:simatic_wincc:7.3:*:*:*:*:*:*:*
siemens simatic_wincc 7.4 cpe:2.3:a:siemens:simatic_wincc:7.4:*:*:*:*:*:*:*
siemens simatic_wincc_\(tia_portal\) 13 cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):13:sp1:*:*:professional:*:*:*
siemens simatic_wincc_\(tia_portal\) 14 cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):14:*:*:*:professional:*:*:*
siemens simatic_wincc_runtime 13 cpe:2.3:a:siemens:simatic_wincc_runtime:13:sp1:*:*:professional:*:*:*
siemens simatic_wincc_runtime 14 cpe:2.3:a:siemens:simatic_wincc_runtime:14:*:*:*:professional:*:*:*

References for CVE-2017-6867

cvelogic Threat Intelligence