What is CVE-2017-6872?

CVE-2017-6872 is a medium-severity vulnerability in Siemens Ozw672, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2017-08-08.

How severe is CVE-2017-6872?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Siemens Ozw672

CVE-2017-6872

A vulnerability was discovered in Siemens OZW672 (all versions) and OZW772 (all versions) that could allow an attacker with access to port 21/tcp to access or alter historical measurement data stored on the device.

Vulnerability class: Broken Authentication

Published 2017-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Siemens Ozw672
Siemens Ozw672 Firmware
Siemens Ozw772
Siemens Ozw772 Firmware
Ozw672, Ozw772 — versions OZW672, OZW772

Weakness classification (CWE)

References

www.securityfocus.com/bid/99473 (VDB Entry, Third Party Advisory, vdb-entry)
www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-563539.pdf (Vendor Advisory)

Frequently asked questions

What is CVE-2017-6872?: CVE-2017-6872 is a medium-severity vulnerability in Siemens Ozw672, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2017-08-08.
How severe is CVE-2017-6872?: Medium severity. CVSS v3 base score is 6.5 out of 10.