How severe is CVE-2017-6871?

CVE-2017-6871 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over physical access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2017-6871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6871?

CVE-2017-6871 primarily affects Siemens Simatic Wincc Sm@rtclient. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-6871?

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

When was CVE-2017-6871 published?

CVE-2017-6871 was published on 2017-08-08 and last updated on 2026-06-17.

CVE-2017-6871

CVE-2017-6871 is a medium-severity vulnerability in Siemens Simatic Wincc Sm@rtclient with a CVSS 3.x base score of 5.4. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.6
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Siemens Simatic Wincc Sm@rtclient
Published: 2017-08-08
Last modified: 2026-06-17

Description

A vulnerability was discovered in Siemens SIMATIC WinCC Sm@rtClient for Android (All versions before V1.0.2.2) and SIMATIC WinCC Sm@rtClient for Android Lite (All versions before V1.0.2.2). An attacker with physical access to an unlocked mobile device, that has the affected app running, could bypass the app's authentication mechanism under certain conditions.

Frequently asked questions

What is CVE-2017-6871?: A vulnerability was discovered in Siemens SIMATIC WinCC Sm@rtClient for Android (All versions before V1.0.2.2) and SIMATIC WinCC Sm@rtClient for Android Lite (All versions before V1.0.2.2). An attacker with physical access to an unlocked mobile device, that has the affected app running, could bypass the app's authentication mechanism under certain conditions.
How severe is CVE-2017-6871?: CVE-2017-6871 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over physical access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2017-6871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6871?: CVE-2017-6871 primarily affects Siemens Simatic Wincc Sm@rtclient. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-6871?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-6871 published?: CVE-2017-6871 was published on 2017-08-08 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:siemens:simatic_wincc_sm\@rtclient:*:*:*:*:*:android:*:*
cpe:2.3:a:siemens:simatic_wincc_sm\@rtclient_lite:*:*:*:*:*:android:*:*

More vulnerabilities in Siemens Simatic Wincc Sm@rtclient

CVE-2017-6870 — High (CVSS 7.4): A vulnerability was discovered in Siemens SIMATIC WinCC Sm@rtClient for Android (All versions before V1.0.2.2). The…
CVE-2015-5084 — Low (CVSS 2.1): The Siemens SIMATIC WinCC Sm@rtClient and Sm@rtClient Lite applications before 01.00.01.00 for Android do not properly…
CVE-2014-5231 — Low (CVSS 2.1): The Siemens SIMATIC WinCC Sm@rtClient app before 1.0.2 for iOS allows physically proximate attackers to extract the…
CVE-2014-5233 — Low (CVSS 1.9): The Siemens SIMATIC WinCC Sm@rtClient app before 1.0.2 for iOS allows physically proximate attackers to discover…
CVE-2014-5232 — Low (CVSS 1.9): The Siemens SIMATIC WinCC Sm@rtClient app before 1.0.2 for iOS allows local users to bypass an intended…

All CVEs affecting Siemens Simatic Wincc Sm@rtclient →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →