How severe is CVE-2019-6854?

CVE-2019-6854 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-6854 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6854?

CVE-2019-6854 primarily affects Schneider-electric Clearscada. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6854?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-6854 published?

CVE-2019-6854 was published on 2020-01-06 and last updated on 2026-06-17.

CVE-2019-6854

CVE-2019-6854 is a high-severity vulnerability in Schneider-electric Clearscada with a CVSS 3.x base score of 7.8. 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: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Schneider-electric Clearscada
Published: 2020-01-06
Last modified: 2026-06-17

Description

A CWE-287: Improper Authentication vulnerability exists in a folder within EcoStruxure Geo SCADA Expert (ClearSCADA) -with initial releases before 1 January 2019- which could cause a low privilege user to delete or modify database, setting or certificate files. Those users must have access to the file system of that operating system to exploit this vulnerability. Affected versions in current support includes ClearSCADA 2017 R3, ClearSCADA 2017 R2, and ClearSCADA 2017.

Frequently asked questions

What is CVE-2019-6854?: A CWE-287: Improper Authentication vulnerability exists in a folder within EcoStruxure Geo SCADA Expert (ClearSCADA) -with initial releases before 1 January 2019- which could cause a low privilege user to delete or modify database, setting or certificate files. Those users must have access to the file system of that operating system to exploit this vulnerability. Affected versions in current support includes ClearSCADA 2017 R3, ClearSCADA 2017 R2, and ClearSCADA 2017.
How severe is CVE-2019-6854?: CVE-2019-6854 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-6854 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6854?: CVE-2019-6854 primarily affects Schneider-electric Clearscada. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6854?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-6854 published?: CVE-2019-6854 was published on 2020-01-06 and last updated on 2026-06-17.

References

https://www.se.com/ww/en/download/document/SEVD-2019-344-05/

Affected products (3)

cpe:2.3:a:schneider-electric:clearscada:2017:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:clearscada:2017:r2:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:clearscada:2017:r3:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
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…

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