How severe is CVE-2019-6839?

CVE-2019-6839 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-6839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6839?

CVE-2019-6839 primarily affects Schneider-electric Meg6501-0001 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6839?

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-2019-6839 published?

CVE-2019-6839 was published on 2019-09-17 and last updated on 2026-06-17.

CVE-2019-6839

CVE-2019-6839 is a high-severity vulnerability in Schneider-electric Meg6501-0001 Firmware with a CVSS 3.x base score of 8.8. 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Schneider-electric Meg6501-0001 Firmware
Published: 2019-09-17
Last modified: 2026-06-17

Description

A CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, MEG6260-0415 - U.motion KNX Server Plus, Touch 15), which could allow a user with low privileges to upload a rogue file.

Frequently asked questions

What is CVE-2019-6839?: A CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, MEG6260-0415 - U.motion KNX Server Plus, Touch 15), which could allow a user with low privileges to upload a rogue file.
How severe is CVE-2019-6839?: CVE-2019-6839 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-6839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6839?: CVE-2019-6839 primarily affects Schneider-electric Meg6501-0001 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6839?: 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-2019-6839 published?: CVE-2019-6839 was published on 2019-09-17 and last updated on 2026-06-17.

References

https://www.se.com/ww/en/download/document/SEVD-2019-253-01/

Affected products (4)

cpe:2.3:o:schneider-electric:meg6501-0001_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:meg6501-0002_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:meg6260-0410_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:meg6260-0415_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Schneider-electric Meg6501-0001 Firmware

CVE-2019-6840 — Critical (CVSS 9.8): A Format String: CWE-134 vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 -…
CVE-2019-6837 — Critical (CVSS 9.1): A Server-Side Request Forgery (SSRF): CWE-918 vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX…
CVE-2019-6836 — High (CVSS 7.5): A CWE-863: Incorrect Authorization vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server,…
CVE-2019-6838 — Medium (CVSS 6.5): A CWE-863: Incorrect Authorization vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server,…
CVE-2019-6835 — Medium (CVSS 5.4): A Cross-Site Scripting (XSS) CWE-79 vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server,…

All CVEs affecting Schneider-electric Meg6501-0001 Firmware →

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