What is CVE-2019-10689?

CVE-2019-10689 is a medium-severity vulnerability in Polycom Better Together Over Ethernet Connector, classified under Improper Authentication. CVSS score: 6.5/10. Published 2019-06-24.

How severe is CVE-2019-10689?

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

Auth bypass in Polycom Better Together Over Ethernet Connector

CVE-2019-10689

VVX products using UCS software version 5.9.2 and earlier with Better Together over Ethernet Connector (BToE) application version 3.9.1 and earlier provides insufficient authentication between the BToE application and the BToE component, resulting in leakage of sensitive information.

Vulnerability class: Broken Authentication

Published 2019-06-24 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.007 (52.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

www.securityfocus.com/bid/108799 (VDB Entry, Third Party Advisory, vdb-entry)
support.polycom.com/content/dam/polycom-support/global/documentation/insufficie… (Vendor Advisory)

Frequently asked questions

What is CVE-2019-10689?: CVE-2019-10689 is a medium-severity vulnerability in Polycom Better Together Over Ethernet Connector, classified under Improper Authentication. CVSS score: 6.5/10. Published 2019-06-24.
How severe is CVE-2019-10689?: Medium severity. CVSS v3 base score is 6.5 out of 10.